CN109165476A - A kind of modeling method and simulation of wind method of modularization wind-field model - Google Patents
A kind of modeling method and simulation of wind method of modularization wind-field model Download PDFInfo
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Abstract
This application discloses a kind of modeling method of modularization wind-field model and simulation of wind methods, the application is solved by batch and post-processing, establish the standard wind field database model of the air speed data comprising target area difference wind angle, any position, the standard wind field database model established based on the application, real-time short-term or long-term general mood marquis's characterisitic parameter in combining target area, can quickly obtain the wind speed field distribution simulation result of target area.Cumbersome Modeling Calculation step is greatly simplified by the modularization of wind speed field model, solves the analog simulation complex steps of existing complex topography wind field analogy method, and low efficiency promotes difficult technical problem.
Description
Technical field
This application involves the modeling methods and simulation of wind side of Wind Engineering field more particularly to a kind of modularization wind-field model
Method.
Background technique
China's Coastal Areas terrain environment is complicated, mostly mountain and hill landforms.The gradient, the height of Complex Mountain landform are planted
Quilt and occlusion effect can all influence to flow through the wind field distribution situation in the region.The influence of this landform, geomorphological environment to wind field can
To be indicated with the wind speed of nondimensionalization than size.Computational fluid dynamics (computation fluid dynamics, CFD)
Can the air-flow in simulation of atmospheric boundary layer generated in complicated landform environment acceleration, separation, around phenomena such as, at present by
Wind energy assesses unit, Electric Design unit, and city planning design unit uses.However, predicting certain using CFD analogy method at present
When the wind field in one area, generally requires since terrain modeling, then to carry out grid drawing, boundary condition definition, solves parameter
Setting and post-processing etc. a series of step, the analog simulation step for resulting in existing complex topography wind field analogy method are numerous
Trivial, low efficiency promotes difficult technical problem.
Summary of the invention
It is existing for solving this application provides a kind of modeling method of modularization wind-field model and simulation of wind method
The analog simulation complex steps of complex topography wind field analogy method, low efficiency promote difficult technical problem.
The application first aspect provides a kind of modeling method of modularization wind-field model, comprising:
S1: being based on global digital elevation model, and target area is divided into several continuous square subregions, is established
The corresponding three-dimensional terrain model of the subregion；
S2: it is based on the three-dimensional terrain model, foundation includes the spatial data of the three-dimensional terrain model, wind direction
The standard database submodel of data and wind speed than data；
S3: circulation executes step S2, establishes the corresponding standard database of each three-dimensional terrain model respectively
Submodel；
S4: each standard database submodel is integrated, and obtains the standard wind field data of the target area
Library model.
Preferably, the step S1 is specifically included:
S11: being based on global digital elevation model, and target area is divided into several continuous square subregions, and
The computational domain of the subregion is vertically stretched to sustained height threshold value according to preset blocking rate, obtains the subregion pair
The three-dimensional terrain model answered.
Preferably, the step S11 is specifically included:
S111: being based on global digital elevation model, and target area is divided into several continuous square subregions,
In, the center of the subregion is divided into core space, expansion area and transition region outward；
S112: according to the global digital elevation model, the core space, the expansion area and the transition are determined respectively
Latitude and longitude coordinates information, absolute elevation information, ground mulching type information and the leaf area density information in area；
S113: merge latitude and longitude coordinates information, the absolute elevation letter of the core space, the expansion area and the transition region
Breath, ground mulching type information and leaf area density information, generate dimensional topography curved surface, and according to the dimensional topography curved surface and
Preset blocking rate determines the height threshold of the computational domain of the subregion, and by the computational domain be vertically stretched to it is described
The equal height of height threshold obtains the corresponding three-dimensional terrain model of the subregion.
Preferably, the step S2 is specifically included:
S21: it is based on the three-dimensional terrain model, obtains the roughness of ground surface information of the computational domain of the subregion, and root
According to fluid dynamics governing equation, the corresponding relationship of the roughness of ground surface information and aerodynamic resistance factor is established；
S22: the calculating parameter of Aerodynamics Model is obtained, and simultaneously output model is calculated according to the calculating parameter batch
Wind speed compares data, wherein the calculating parameter includes: turbulence model type, boundary condition, convergence threshold value；
S23: according to the model wind speed than data, foundation include the three-dimensional terrain model spatial data,
The standard database submodel of wind direction data and wind speed than data.
The application second aspect provides a kind of wind of standard wind field database model established based on foregoing invention content
Field analogy method, comprising:
S6: according to the latitude and longitude coordinates to simulated domain, called from the standard wind field database model with it is described to
The corresponding standard database submodel of simulated domain；
S7: obtaining the practical wind parameter to simulated domain, and the practical wind parameter is substituted into the standard database
Submodel carries out operation, obtains the simulation of wind result data to simulated domain, wherein the practical wind parameter includes:
The shot and long term wind climate parameter to simulated domain refers to wind speed parameter to the practical of simulated domain with described.
The application third aspect provides a kind of model building device of modularization wind-field model, comprising:
It is continuous to be divided into several for being based on global digital elevation model by initial landform modeling unit for target area
Square subregion, establish the corresponding three-dimensional terrain model of the subregion；
Submodel generation unit, for being based on the three-dimensional terrain model, foundation includes the three-dimensional terrain model
The standard database submodel of spatial data, wind direction data and wind speed than data；
Submodel integral unit obtains the target area for integrating each standard database submodel
The standard wind field database model in domain.
Preferably, the initial landform modeling unit is specifically used for: being based on global digital elevation model, target area is drawn
It is divided into several continuous square subregions, and is vertically stretched the computational domain of the subregion according to preset blocking rate
To sustained height threshold value, the corresponding three-dimensional terrain model of the subregion is obtained.
Preferably, the initial landform modeling unit specifically includes:
It is continuous to be divided into several for being based on global digital elevation model by sub-zone dividing subelement for target area
Square subregion, wherein the center of the subregion is divided into core space, expansion area and transition region outward；
Terrain information obtains subelement, for determining the core space, institute respectively according to the global digital elevation model
Latitude and longitude coordinates information, absolute elevation information, ground mulching type information and the leaf area for stating expansion area and the transition region are close
Spend information；
Terrain modeling subelement, for merging the latitude and longitude coordinates of the core space, the expansion area and the transition region
Information, absolute elevation information, ground mulching type information and leaf area density information generate dimensional topography curved surface, and according to institute
State dimensional topography curved surface and preset blocking rate determine the subregion computational domain height threshold, and by the computational domain edge
It vertically is stretched to the height equal with the height threshold, obtains the corresponding three-dimensional terrain model of the subregion.
Preferably, the submodel generation unit specifically includes:
Hydrodynamic model models subelement, for being based on the three-dimensional terrain model, obtains the calculating of the subregion
The roughness of ground surface information in domain, and according to fluid dynamics governing equation, establish the roughness of ground surface information and air force
Learn the corresponding relationship of resistance coefficient；
Hydrokinetic parameter obtains subelement, for obtaining the calculating parameter of Aerodynamics Model, and according to the meter
It calculates the calculating of parameter batch and output model wind speed compares data, wherein the calculating parameter includes: turbulence model type, perimeter strip
Part, convergence threshold value；
Submodel generates subelement, and according to the model wind speed than data, foundation includes the three-dimensional terrain model
The standard database submodel of spatial data, wind direction data and wind speed than data.
The application fourth aspect provides a kind of wind of standard wind field database model established based on foregoing invention content
Field simulator, comprising:
Submodel call unit, the latitude and longitude coordinates for basis to simulated domain, from the standard wind field database mould
It is called in type with described to the corresponding standard database submodel of simulated domain；
Simulation of wind arithmetic element, for obtaining the practical wind parameter to simulated domain, by the practical wind parameter
It substitutes into the standard database submodel and carries out operation, obtain the wind speed field distribution simulation result data to simulated domain,
Wherein, the practical wind parameter includes: the shot and long term wind climate parameter and the reality to simulated domain to simulated domain
Border refers to wind speed parameter.
As can be seen from the above technical solutions, the application has the following advantages:
The application is solved by batch and post-processing, establishes the wind speed comprising target area difference wind angle, any position
The standard wind field database model of data, based on the standard wind field database model that the application establishes, the reality in combining target area
When short-term or long-term general mood marquis's characterisitic parameter, can quickly obtain the wind speed field distribution simulation result of target area.Pass through wind speed
The modularization of field model greatly simplifies cumbersome Modeling Calculation step, solves existing complex topography wind field analogy method
Analog simulation complex steps, low efficiency promotes difficult technical problem.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application without any creative labor, may be used also for those of ordinary skill in the art
To obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of process signal of one embodiment of the modeling method of modularization wind-field model provided by the present application
Figure；
Fig. 2 is a kind of process signal of second embodiment of the modeling method of modularization wind-field model provided by the present application
Figure；
Fig. 3 is a kind of one embodiment of the simulation of wind method based on standard wind field database model provided by the present application
Flow diagram；
Fig. 4 is a kind of structural representation of one embodiment of the model building device of modularization wind-field model provided by the present application
Figure；
Fig. 5 is a kind of one embodiment of the simulation of wind device based on standard wind field database model provided by the present application
Structural schematic diagram；
Fig. 6 is a kind of sub-zone dividing top view of standard wind field database model provided by the present application；
Fig. 7 is a kind of sub-zone dividing side view of standard wind field database model provided by the present application；
Fig. 8 is that the three-dimensional terrain model of the application applies the computational domain schematic diagram obtained after boundary condition.
Specific embodiment
Traditional wind speed field analysis method needs to undergo from initial landform surface data to final wind speed profile result
Cumbersome step, and the cross-platform operation between different software can take a substantial amount of time, it is extensive that these factors limit it
Application.
The embodiment of the present application provides the modeling method and simulation of wind method of a kind of modularization wind-field model, for solving
The analog simulation complex steps of existing complex topography wind field analogy method, low efficiency promote difficult technical problem.
To enable present invention purpose, feature, advantage more obvious and understandable, below in conjunction with the application
Attached drawing in embodiment, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that disclosed below
Embodiment be only some embodiments of the present application, and not all embodiment.Based on the embodiment in the application, this field
Those of ordinary skill's all other embodiment obtained without making creative work belongs to the application protection
Range.
Referring to Fig. 1, the embodiment of the present application provides a kind of modeling method of modularization wind-field model, comprising:
101: being based on global digital elevation model, target area is divided into several continuous square subregions, is built
Found the corresponding three-dimensional terrain model of the subregion；
It should be noted that needing first to obtain the landform of target area before the simulation of wind method for implementing the application
Information establishes the three-dimensional terrain model of each sub-regions.
102: be based on three-dimensional terrain model, foundation include the spatial data of three-dimensional terrain model, wind direction data and
Standard database submodel of the wind speed than data；
It should be noted that establish include subregion terrain information three-dimensional terrain model after, in dimensional topography
On the basis of model, by the spatial data, wind direction data and wind speed of each sub-regions than data be inserted in it is corresponding dimensionally
Shape model obtains the standard database submodel of the subregion.
103: judging whether the quantity of standard database submodel is equal with the quantity of three-dimensional terrain model, if then
Step 104 is executed, if it is not, then return step 102.
It should be noted that circulation executes step 102, until all subregions of target area establish corresponding mark
Step 104 is executed again after quasi- database subsystem module.
104: each standard database submodel being integrated, the standard wind field data of the target area are obtained
Library model.
The embodiment of the present application is solved by batch and post-processing, and establishing includes target area difference wind angle, any position
Air speed data blocking criteria wind field database model, based on the application establish standard wind field database model, in conjunction with
Real-time short-term or long-term general mood marquis's characterisitic parameter of objective area, can quickly obtain the wind speed field distribution simulation knot of target area
Fruit.Cumbersome Modeling Calculation step is greatly simplified by the modularization of wind speed field model, solves existing complicated landform
The analog simulation complex steps of simulation of wind method, low efficiency promote difficult technical problem.
A kind of above detailed description of one embodiment of the modeling method of modularization wind-field model provided by the present application,
It is below a kind of detailed description of second embodiment of the modeling method of modularization wind-field model provided by the present application.
Referring to Fig. 2, the embodiment of the present application provides a kind of modeling method of modularization wind-field model, comprising:
201: it is based on global digital elevation model, target area is divided into several continuous square subregions,
In, the center of the subregion is divided into core space, expansion area and transition region outward；
It should be noted that please referring to Fig. 6 and Fig. 7, subregion is carried out according to the square of preset side length, which is to extract
Wind field information and the core space for establishing database.The outer layer of core space is provided that expansion area, and setting expansion area is to reduce
Influence of the boundary to core space wind field result, wherein the terrain information in expansion area is real terrain elevation, also from Digital Radio
It is obtained in elevation model.The outer layer of expansion area is transition region, and setting transition region is in order to avoid the elevation of target area boundaries is prominent
Become, guarantee arrives stream wind speed section simultaneously avoid actual complex boundary generate reflux, wherein transition region elevation by expansion area boundary gradually
It is reduced to the lowest elevation of core space.
In addition, expansion area and transition region are the square loop with core space common point, and core space, expansion area and mistake
The size for crossing area can be adjusted by computing capability, and the optimal case for Practical Project considers, the core space of the present embodiment
Side length is preferably 10 kilometers, and the width of expansion area is preferably 1 kilometer, and the width of transition region is preferably 5 kilometers.
202: according to the global digital elevation model, determining the core space, the expansion area and the transition respectively
Latitude and longitude coordinates information, absolute elevation information, ground mulching type information and the leaf area density information in area；
It should be noted that then obtaining mesh from global digital elevation model after target area has been divided subregion
Each sub-regions marked under region include the corresponding latitude and longitude coordinates information of core space, expansion area and transition region of subregion, sea
Pull out elevation information, ground mulching type information and leaf area density information；
203: merging latitude and longitude coordinates information, the absolute elevation letter of the core space, the expansion area and the transition region
Breath, ground mulching type information and leaf area density information, generate dimensional topography curved surface, and according to the dimensional topography curved surface and
Preset blocking rate determines the height threshold of the computational domain of the subregion, and by the computational domain be vertically stretched to it is described
The equal height of height threshold obtains the corresponding three-dimensional terrain model of the subregion.
It should be noted that including the latitude and longitude coordinates and its correspondence of target area discrete point according to the landform altitude
Absolute elevation, the roughness of ground surface data include ground mulching type, vegetation pattern and leaf area density information.Merge
Core, the latitude and longitude coordinates of extension and transitional region, absolute elevation and roughness of ground surface data generate dimensional topography curved surface.
Then according to the dimensional topography curved surface and preset blocking rate, topographic projection's area under each wind direction is calculated, with
And meeting the maximum height of blocking rate requirement is computational domain height threshold, and the computational domain is vertically stretched to and the height
The equal height of threshold value is spent, the corresponding three-dimensional terrain model of the subregion is obtained.
Wherein, the height of computational domain takes the computational domain height of the maximum wind direction of the downward blocking rate of full blast.Blocking rate=stream
Object maximum front face area/basin cross-sectional area, the maximum front face area for streaming object take target area and extend out area windward
Projected area on face, the cross-sectional area in basin are projection of the computational domain in windward side.In addition, to avoid the obstruction in computational domain
Effect, according to wind tunnel test experience, the preset blocking rate of the present embodiment can be preferably 3~5%.
204: being based on the three-dimensional terrain model, obtain the roughness of ground surface information of the computational domain of the subregion, and root
According to fluid dynamics governing equation, the corresponding relationship of the roughness of ground surface information and aerodynamic resistance factor is established；
It should be noted that in the corresponding relationship for establishing the roughness of ground surface information and aerodynamic resistance factor
When, the horizontal grid spacing parameter, vertical grid first floor height parameter and grid for obtaining the three-dimensional terrain model of calculating first increase
Long scale parameter.
Meanwhile premised on the independence for guaranteeing numerical solution.The present embodiment preferred levels size of mesh opening parameter is 50 meters, is erected
It is 1 meter to first floor height parameter, grid growth ratio parameter is preferably smaller than 1.1.
Then by applying source item in the dynamic governing equations of wind field near the ground, the air force that coarse earth's surface is provided
It learns resistance and introduces flow field calculation model；Resistance source item indicates in computational fluid dynamics governing equation are as follows:
su=-CdA|U|u
sk=CdA(βp|U|3-βd|U|k)
Wherein, su、sk、sεIt is illustrated respectively in the sources of resistance applied in the equation of momentum, tubulence energy equation and dissipative shock wave equation
, CdIt indicates that the corresponding resistance coefficient of ground surface type, A are leaf area density coefficient, indicates leaf area contained in unit volume
Size, U is mean wind speed, and u is instantaneous wind speed, and k is tubulence energy, and ε is dissipative shock wave, αp、βp、αd、βdFor the warp in turbulence model
Test constant.
And the influence of surface vegetation stream field is related with the type of vegetation, closeness.In the present embodiment, resistance source item passes through
The leaf area density coefficient of surface vegetation and its corresponding resistance coefficient determine.However the vegetation pattern of the same area and growth shape
Condition does not ensure that uniformity, therefore the corresponding roughness of ground surface data information of the present embodiment combination discrete point, by analog domain with
Kilometer is unit subregion, and the average leaf area density coefficient in each area is respectively adopted and resistance coefficient calculates.
205: obtaining the calculating parameter of Aerodynamics Model, and simultaneously output model is calculated according to the calculating parameter batch
Wind speed compares data, wherein the calculating parameter includes: turbulence model type, boundary condition, convergence threshold value；
It should be noted that obtaining the calculating parameter of Aerodynamics Model, and according to the calculating parameter using parallel
Calculation method batch solves wind field movement and output model wind speed compares data.
Specifically, turbulence model type preferably uses the k- ω model of sst, pressure is coupled with speed to be calculated using SIMPLIC
Method, convective term use QUICK format, and diffusion term uses central difference schemes.Convergence is that the residual error of all variables restrains, when
The residual error of x, y, z momentum sum reaches 10-5, the residual error of ω and continuity equation reaches 10-3When, all residual errors all reach convergence.
The boundary condition is speed entrance, exit condition.Referring to Fig. 8, Fig. 8 is the present embodiment in specified registering weather vane
When calculation, used boundary condition form.The form is not needed to regenerate computational domain, be improved when carrying out batch calculating
Computational efficiency.
Wherein, wind speed calculating than data of the model wind speed than the single discrete point in data specifically includes: with wind speed ratio
Characterize the influence to wind speed profile of landform altitude and roughness of ground surface, under θ wind angle, the wind speed of target area midpoint (x, y, z)
It may be expressed as: than S
S (x, y, z, θ)=U (x, y, z, θ)/Uin(z,θ)
Wherein, U (x, y, z, θ) is the wind speed solving result of target area point (x, y, z), Uin(z, θ) is border entries z high
Arrives stream wind speed size at degree.
Finally, target area wind speed is converted into latitude coordinate than exporting the cartesian coordinate of result, the sub-district is obtained
The wind speed of discrete point in domain compares data.
206: according to the model wind speed than data, foundation include the three-dimensional terrain model spatial data,
The standard database submodel of wind direction data and wind speed than data.
It should be noted that obtaining and counting the wind speed of the discrete point being calculated by step 205 than data, and will system
The wind speed for the various discrete point counted in conjunction with the three-dimensional terrain model that step 203 is established, obtains the dimensional topography mould than data
The corresponding standard database submodel of type.
207: judging whether the quantity of standard database submodel is equal with the quantity of three-dimensional terrain model, if then
Step 208 is executed, if it is not, then return step 204
It should be noted that circulation executes step 204 to step 206, until all subregions of target area are established
Step 208 is executed again after corresponding standard database submodule.
208: each standard database submodel being integrated, the standard wind field data of the target area are obtained
Library model.
In addition, the present embodiment is also based on global digital elevation model frame, the sub- entry in expanding data library, including it is multiple
Spatial altitude, multiple wind directions and corresponding wind speed ratio.
The embodiment of the present application is solved by batch and post-processing, and establishing includes target area difference wind angle, any position
Air speed data blocking criteria wind field database model, based on the application establish standard wind field database model, in conjunction with
Real-time short-term or long-term general mood marquis's characterisitic parameter of objective area, can quickly obtain the wind speed field distribution simulation knot of target area
Fruit.Cumbersome Modeling Calculation step is greatly simplified by the modularization of wind speed field model, solves existing complicated landform
The analog simulation complex steps of simulation of wind method, low efficiency promote difficult technical problem.
A kind of above detailed description of second embodiment of the modeling method of modularization wind-field model provided by the present application,
It is below a kind of the detailed of one embodiment of the simulation of wind method based on standard wind field database model provided by the present application
Explanation.
Referring to Fig. 3, the embodiment of the present application provides a kind of standard wind field database mould established based on the above embodiment
The simulation of wind method of type, comprising:
301: according to the latitude and longitude coordinates to simulated domain, called from the standard wind field database model with it is described to
The corresponding standard database submodel of simulated domain；
302: obtaining the practical wind parameter to simulated domain, the practical wind parameter is substituted into the standard database
Submodel carries out operation, obtains the simulation of wind result data to simulated domain.
Wherein, the practical wind parameter include: the shot and long term wind climate parameter to simulated domain with described wait simulate
The practical of region refers to wind speed parameter.
It should be noted that present embodiments providing a kind of standard wind field database model established based on previous embodiment
Simulation of wind method, first according to coordinate position to simulated domain, called from the standard wind field database model with
It is described to the corresponding standard database submodel of simulated domain, then using the standard database submodel selected as template, will
The practical wind parameter is substituted into the standard database submodel and carries out operation by the practical wind parameter to simulated domain,
Obtain the simulation of wind result data to simulated domain.
In addition, the quantity for the standard database submodel that the present embodiment selects includes but is not limited to 1.
The above are a kind of implementations of the simulation of wind method based on standard wind field database model provided by the present application
The detailed description of example, here is a kind of the detailed of one embodiment of the model building device of modularization wind-field model provided by the present application
Explanation.
Referring to Fig. 4, the embodiment of the present application provides a kind of model building device of modularization wind-field model, comprising:
Initial landform modeling unit 401, for being based on global digital elevation model, is divided into several companies for target area
Continuous square subregion establishes the corresponding three-dimensional terrain model of the subregion；
Submodel generation unit 402, for being based on the three-dimensional terrain model, foundation includes the three-dimensional terrain model
Spatial data, wind direction data and wind speed than data standard database submodel；
Submodel integral unit 403 obtains the target for integrating each standard database submodel
The standard wind field database model in region.
Preferably, the initial landform modeling unit 401 is specifically used for: global digital elevation model is based on, by target area
Domain is divided into several continuous square subregions, and according to preset blocking rate by the computational domain of the subregion vertically
It is stretched to sustained height threshold value, obtains the corresponding three-dimensional terrain model of the subregion.
Preferably, the initial landform modeling unit 401 specifically includes:
Target area is divided into several for being based on global digital elevation model by sub-zone dividing subelement 4011
Continuous square subregion, wherein the center of the subregion is divided into core space, expansion area and transition region outward；
Terrain information obtains subelement 4012, for determining the core respectively according to the global digital elevation model
Latitude and longitude coordinates information, absolute elevation information, ground mulching type information and the blade face in area, the expansion area and the transition region
Product density information；
Terrain modeling subelement 4013, for merging the longitude and latitude of the core space, the expansion area and the transition region
Coordinate information, absolute elevation information, ground mulching type information and leaf area density information generate dimensional topography curved surface, and root
Determine the height threshold of the computational domain of the subregion according to the dimensional topography curved surface and preset blocking rate, and by the calculating
Domain is vertically stretched to the height equal with the height threshold, obtains the corresponding three-dimensional terrain model of the subregion.
Preferably, the submodel generation unit 402 specifically includes:
Hydrodynamic model models subelement 4021, for being based on the three-dimensional terrain model, obtains the subregion
The roughness of ground surface information of computational domain, and according to fluid dynamics governing equation, establish the roughness of ground surface information and air
The corresponding relationship of dynamical resistance coefficient；
Hydrokinetic parameter obtains subelement 4022, for obtaining the calculating parameter of Aerodynamics Model, and according to institute
It states the calculating of calculating parameter batch and output model wind speed compares data, wherein the calculating parameter includes: turbulence model type, side
Boundary's condition, convergence threshold value；
Submodel generates subelement 4023, and according to the model wind speed than data, foundation includes the dimensional topography mould
Standard database submodel of spatial data, wind direction data and the wind speed of type than data.
The above are a kind of detailed description of one embodiment of the model building device of modularization wind-field model provided by the present application,
It is below a kind of the detailed of one embodiment of the simulation of wind method based on standard wind field database model provided by the present application
Explanation.
Referring to Fig. 5, the embodiment of the present application provides a kind of standard wind field database established based on foregoing invention content
The simulation of wind device of model, comprising:
Submodel call unit 501, the latitude and longitude coordinates for basis to simulated domain, from the standard wind field database
It is called in model with described to the corresponding standard database submodel of simulated domain；
Simulation of wind arithmetic element 502 joins the practical wind for obtaining the practical wind parameter to simulated domain
Number substitutes into the standard database submodel and carries out operation, obtains the wind speed field distribution simulation number of results to simulated domain
It according to, wherein the practical wind parameter include: the shot and long term wind climate parameter to simulated domain and described to simulated domain
It is practical to refer to wind speed parameter.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The description of the present application and term " first " in above-mentioned attached drawing, " second ", " third ", " the 4th " etc. are (if deposited
) it is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that use in this way
Data are interchangeable under appropriate circumstances, so that embodiments herein described herein for example can be in addition to illustrating herein
Or the sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units need not limit
In step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, produce
The other step or units of product or equipment inherently.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
The above, above embodiments are only to illustrate the technical solution of the application, rather than its limitations；Although referring to before
Embodiment is stated the application is described in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of modeling method of modularization wind-field model characterized by comprising
S1: being based on global digital elevation model, target area is divided into several continuous square subregions, described in foundation
The corresponding three-dimensional terrain model of subregion；
S2: it is based on the three-dimensional terrain model, foundation includes the spatial data of the three-dimensional terrain model, wind direction data
And wind speed is than the standard database submodel of data；
S3: circulation executes step S2, establishes the corresponding standard database submodule of each three-dimensional terrain model respectively
Type；
S4: each standard database submodel is integrated, and obtains the standard wind field database mould of the target area
Type.
2. modeling method according to claim 1, which is characterized in that the step S1 is specifically included:
S11: being based on global digital elevation model, and target area is divided into several continuous square subregions, and according to
The computational domain of the subregion is vertically stretched to sustained height threshold value by preset blocking rate, and it is corresponding to obtain the subregion
Three-dimensional terrain model.
3. modeling method according to claim 2, which is characterized in that the step S11 is specifically included:
S111: being based on global digital elevation model, and target area is divided into several continuous square subregions, wherein
The center of the subregion is divided into core space, expansion area and transition region outward；
S112: according to the global digital elevation model, the core space, the expansion area and the transition region are determined respectively
Latitude and longitude coordinates information, absolute elevation information, ground mulching type information and leaf area density information；
S113: merge the latitude and longitude coordinates information of the core space, the expansion area and the transition region, absolute elevation information,
Ground mulching type information and leaf area density information generate dimensional topography curved surface, and according to the dimensional topography curved surface and in advance
The blocking rate set determines the height threshold of the computational domain of the subregion, and the computational domain is vertically stretched to and the height
Spend the equal height of threshold value.
4. modeling method according to claim 1, which is characterized in that the step S2 is specifically included:
S21: it is based on the three-dimensional terrain model, obtains the roughness of ground surface information of the computational domain of the subregion, and according to stream
Body dynamics governing equation establishes the corresponding relationship of the roughness of ground surface information and aerodynamic resistance factor；
S22: the calculating parameter of Aerodynamics Model is obtained, and simultaneously output model wind speed is calculated according to the calculating parameter batch
Compare data, wherein the calculating parameter includes: turbulence model type, boundary condition, convergence threshold value；
S23: according to the model wind speed than data, foundation includes the spatial data of the three-dimensional terrain model, wind direction
The standard database submodel of data and wind speed than data.
5. a kind of simulation of wind method for the standard wind field database model established based on such as Claims 1-4 any one,
It is characterized in that, comprising:
S6: it according to the latitude and longitude coordinates to simulated domain, calls with described from the standard wind field database model wait simulate
The corresponding standard database submodel in region；
S7: obtaining the practical wind parameter to simulated domain, and the practical wind parameter is substituted into the standard database submodule
Type carries out operation, obtains the simulation of wind result data to simulated domain, wherein the practical wind parameter includes: described
Shot and long term wind climate parameter to simulated domain refers to wind speed parameter to the practical of simulated domain with described.
6. a kind of model building device of modularization wind-field model characterized by comprising
Target area is being divided into several continuously just for being based on global digital elevation model by initial landform modeling unit
The corresponding three-dimensional terrain model of the subregion is established in square subregions domain；
Submodel generation unit, for being based on the three-dimensional terrain model, foundation includes the space of the three-dimensional terrain model
The standard database submodel of coordinate data, wind direction data and wind speed than data；
Submodel integral unit obtains the target area for integrating each standard database submodel
Standard wind field database model.
7. model building device according to claim 6, which is characterized in that the initial landform modeling unit is specifically used for: base
In global digital elevation model, target area is divided into several continuous square subregions, and according to preset obstruction
The computational domain of the subregion is vertically stretched to sustained height threshold value by rate, obtains the corresponding dimensional topography mould of the subregion
Type.
8. model building device according to claim 7, which is characterized in that the initial landform modeling unit specifically includes:
Target area is being divided into several continuously just for being based on global digital elevation model by sub-zone dividing subelement
Square subregions domain, wherein the center of the subregion is divided into core space, expansion area and transition region outward；
Terrain information obtains subelement, for determining the core space, the expansion respectively according to the global digital elevation model
The latitude and longitude coordinates information of exhibition section and the transition region, absolute elevation information, ground mulching type information and leaf area density letter
Breath；
Terrain modeling subelement, for merge the core space, the expansion area and the transition region latitude and longitude coordinates information,
Absolute elevation information, ground mulching type information and leaf area density information generate dimensional topography curved surface, and according to the three-dimensional
Terrain surface and preset blocking rate determine the height threshold of the computational domain of the subregion, and the computational domain is vertically drawn
The height equal with the height threshold is extended to, the corresponding three-dimensional terrain model of the subregion is obtained.
9. model building device according to claim 6, which is characterized in that the submodel generation unit specifically includes:
Hydrodynamic model models subelement, for being based on the three-dimensional terrain model, obtains the computational domain of the subregion
Roughness of ground surface information, and according to fluid dynamics governing equation, it establishes the roughness of ground surface information and aerodynamics hinders
The corresponding relationship of force coefficient；
Hydrokinetic parameter obtains subelement, joins for obtaining the calculating parameter of Aerodynamics Model, and according to the calculating
Number batch calculates and output model wind speed compares data, wherein the calculating parameter includes: turbulence model type, boundary condition, receipts
Hold back level threshold value；
Submodel generates subelement, and according to the model wind speed than data, foundation includes the space of the three-dimensional terrain model
The standard database submodel of coordinate data, wind direction data and wind speed than data.
10. a kind of simulation of wind device for the standard wind field database model established based on such as claim 6 to 9 any one,
It is characterised by comprising:
Submodel call unit, the latitude and longitude coordinates for basis to simulated domain, from the standard wind field database model
It calls with described to the corresponding standard database submodel of simulated domain；
Simulation of wind arithmetic element substitutes into the practical wind parameter for obtaining the practical wind parameter to simulated domain
The standard database submodel carries out operation, obtains the simulation of wind result data to simulated domain, wherein the reality
Border wind parameter includes: that the shot and long term wind climate parameter to simulated domain and the practical reference wind speed to simulated domain are joined
Number.
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