CN109388912A - A kind of determination method, system and the terminal device of suspension cable aerodynamic drag - Google Patents
A kind of determination method, system and the terminal device of suspension cable aerodynamic drag Download PDFInfo
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- CN109388912A CN109388912A CN201811331530.9A CN201811331530A CN109388912A CN 109388912 A CN109388912 A CN 109388912A CN 201811331530 A CN201811331530 A CN 201811331530A CN 109388912 A CN109388912 A CN 109388912A
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Abstract
The present invention is suitable for bridge design technology field, discloses determination method, system and the terminal device of a kind of suspension cable aerodynamic drag, comprising: obtain environmental information locating for the dimension information and suspension cable of suspension cable；The Reynolds number of suspension cable is determined according to dimension information and environmental information；The turbulivity of suspension cable is obtained, and fit parameter values are determined according to turbulivity；The resistance coefficient of suspension cable is calculated according to fit parameter values and Reynolds number；The aerodynamic drag of suspension cable is calculated according to the resistance coefficient, dimension information and environmental information of suspension cable.The present invention can solve in the prior art due to the problem according to calculated result inaccuracy caused by the aerodynamic drag for calculating suspension cable compared with low turbulence, the aerodynamic drag that the suspension cable under practical turbulivity can accurately be calculated is of great significance for the accuracy and science of the structure design of cable-stayed bridge.
Description
Technical field
The invention belongs to bridge design technology field more particularly to a kind of determination method, the systems of suspension cable aerodynamic drag
And terminal device.
Background technique
Suspension cable is one of main bearing member of cable-stayed bridge, the accurate aerodynamic drag grasped on suspension cable, for bridge
Stability calculation, vibration analysis and the great significance for design of vibration control.
Currently, calculating to suspension cable aerodynamic drag on condition that wind field turbulivity less than 1%, but due to near-earth atmosphere
Air-flow influenced by above ground structure, vegetation and landforms, form higher turbulivity, therefore, this method leads to oblique pull
The calculated result inaccuracy of rope aerodynamic drag.
Summary of the invention
In view of this, the embodiment of the invention provides determination method, system and the terminals of a kind of suspension cable aerodynamic drag to set
It is standby, to solve the problems, such as the calculated result inaccuracy of suspension cable aerodynamic drag in the prior art.
The first aspect of the embodiment of the present invention provides a kind of determination method of suspension cable aerodynamic drag, comprising:
Obtain environmental information locating for the dimension information and suspension cable of suspension cable；
The Reynolds number of suspension cable is determined according to dimension information and environmental information；
The turbulivity of suspension cable is obtained, and fit parameter values are determined according to turbulivity；
The resistance coefficient of suspension cable is calculated according to fit parameter values and Reynolds number；
The aerodynamic drag of suspension cable is calculated according to the resistance coefficient, dimension information and environmental information of suspension cable.
The second aspect of the embodiment of the present invention provides a kind of determination system of suspension cable aerodynamic drag, comprising:
Module is obtained, for obtaining environmental information locating for the dimension information and suspension cable of suspension cable；
Reynolds number determining module, for determining the Reynolds number of suspension cable according to dimension information and environmental information；
Parameter value determining module determines fit parameter values for obtaining the turbulivity of suspension cable, and according to turbulivity；
Resistance coefficient computing module, for calculating the resistance coefficient of suspension cable according to fit parameter values and Reynolds number；
Aerodynamic drag computing module, for calculating oblique pull according to the resistance coefficient, dimension information and environmental information of suspension cable
The aerodynamic drag of rope.
The third aspect of the embodiment of the present invention provides a kind of terminal device, including memory, processor and is stored in
In memory and the computer program that can run on a processor, processor realize oblique pull as described above when executing computer program
The step of determination method of rope aerodynamic drag.
The fourth aspect of the embodiment of the present invention provides a kind of computer readable storage medium, computer readable storage medium
It is stored with computer program, suspension cable aerodynamic drag as described above is realized when computer program is executed by one or more processors
Determination method the step of.
Existing beneficial effect is the embodiment of the present invention compared with prior art: the embodiment of the present invention obtains suspension cable first
Dimension information and suspension cable locating for environmental information；Then the Reynolds of suspension cable is determined according to dimension information and environmental information
Number；Then the turbulivity of suspension cable is obtained, and fit parameter values are determined according to turbulivity；According to fit parameter values and Reynolds number meter
Calculate the resistance coefficient of suspension cable；The gas of suspension cable is finally calculated according to the resistance coefficient of suspension cable, dimension information and environmental information
Dynamic resistance.The embodiment of the present invention based on practical turbulivity calculate suspension cable aerodynamic drag, can solve in the prior art due to
According to the problem of calculated result inaccuracy caused by the aerodynamic drag for calculating suspension cable compared with low turbulence, reality can be accurately calculated
The aerodynamic drag of suspension cable under the turbulivity of border has important meaning for the accuracy and science of the structure design of cable-stayed bridge
Justice.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the implementation process schematic diagram of the determination method for the suspension cable aerodynamic drag that one embodiment of the invention provides；
Fig. 2 be another embodiment of the present invention provides suspension cable aerodynamic drag determination method implementation process schematic diagram；
Fig. 3 is that the test resistance coefficient that one embodiment of the invention is provided under different tests turbulivity changes with test Reynolds number
Curve synoptic diagram；
Fig. 4 is the schematic block diagram of the determination system for the suspension cable aerodynamic drag that one embodiment of the invention provides；
Fig. 5 is the schematic block diagram for the terminal device that one embodiment of the invention provides.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed
Body details, so as to provide a thorough understanding of the present application embodiment.However, it will be clear to one skilled in the art that there is no these specific
The application also may be implemented in the other embodiments of details.In other situations, it omits to well-known system, device, electricity
The detailed description of road and method, so as not to obscure the description of the present application with unnecessary details.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments.
Fig. 1 is the implementation process schematic diagram of the determination method for the suspension cable aerodynamic drag that one embodiment of the invention provides, and is
Convenient for explanation, only parts related to embodiments of the present invention are shown.The executing subject of the embodiment of the present invention can be terminal
Equipment.As shown in Figure 1, this method may comprise steps of:
Step S101: environmental information locating for the dimension information and suspension cable of suspension cable is obtained.
Wherein, suspension cable is main supporting part cable-stayed bridge main-beam and bridge floor weight being directly delivered on pylon.One
As, the smooth suspension cable not damaged is cylinder.
The dimension information of suspension cable may include the information such as the cross-sectional diameter of suspension cable and the length of suspension cable.Suspension cable
Locating environmental information may include the information such as arrives stream wind speed and atmospheric density.
In embodiments of the present invention, suspension cable is the suspension cable of aerodynamic drag to be calculated, and aerodynamic drag is referred to as sky
Atmidometer.
Step S102: the Reynolds number of suspension cable is determined according to dimension information and environmental information.
Wherein, Reynolds number is a kind of dimensionless number that can be used to characterize fluid mobility status.
In embodiments of the present invention, the Reynolds number of suspension cable can be calculated according to dimension information and environmental information, specifically,
The Reynolds number of suspension cable can be calculated according to the cross-sectional diameter of suspension cable, arrives stream wind speed and atmospheric density.
Step S103: the turbulivity of suspension cable is obtained, and fit parameter values are determined according to turbulivity.
Wherein, turbulivity, also known as turbulence intensity are a kind of standards for measuring air velocity degree of pulsatility, usually with pulsation
Speed side and the size that pulsation is indicated with the ratio between time averaged velocity.
In embodiments of the present invention, actual environment locating for suspension cable is simulated by wind tunnel test, it will be according to wind tunnel test
The turbulivity that the environment of simulation measures, as the turbulivity of suspension cable, i.e., as the incoming flow in actual environment locating for suspension cable
Turbulivity.
Fit parameter values are determined according to turbulivity, specifically: pass through the available turbulivity of wind tunnel test and fitting parameter
The corresponding relationship of value can determine the corresponding fit parameter values of turbulivity according to the corresponding relationship.
Wind tunnel test is carried out in the high regime of wind-tunnel.The wind-tunnel is that the double test sections of a series connection go back to/direct current boundary layers
Wind-tunnel.Its high-speed test (HST) section is 2.2 meters wide, 2 meters high, 5 meters long.The variation of Reynolds number is realized by adjusting wind speed, while recording wind
Temperature, humidity and air pressure in hole calculate different wind speed and the information such as the corresponding Reynolds number of suspension cable size and resistance coefficient.
Step S104: the resistance coefficient of suspension cable is calculated according to fit parameter values and Reynolds number.
In embodiments of the present invention, the resistance coefficient of suspension cable can be calculated according to fit parameter values and Reynolds number.
Step S105: the aerodynamic drag of suspension cable is calculated according to the resistance coefficient, dimension information and environmental information of suspension cable.
In embodiments of the present invention, dimension information includes the cross-sectional diameter of suspension cable and the length of suspension cable, environment letter
Breath includes arrives stream wind speed and atmospheric density, and arrives stream wind speed can be the mean wind speed of incoming flow wind.
The aerodynamic drag of suspension cable is calculated according to the resistance coefficient, dimension information and environmental information of suspension cable specifically: root
Oblique pull is calculated according to the resistance coefficient of suspension cable, the cross-sectional diameter of suspension cable, the length of suspension cable, arrives stream wind speed and atmospheric density
The aerodynamic drag of rope, specific formula for calculation are formula (1).The aerodynamic drag calculated according to formula (1) is the average air that suspension cable is subject to
Dynamic resistance.
In formula (1), FDFor the aerodynamic drag of suspension cable, ρ is atmospheric density, and U is arrives stream wind speed, and D is the transversal of suspension cable
Face diameter, L are the length of suspension cable, CDFor the resistance coefficient of suspension cable.
Seen from the above description, the embodiment of the present invention calculates the aerodynamic drag of suspension cable based on practical turbulivity, by obtaining
The practical turbulivity of suspension cable is taken, and fit parameter values are obtained according to turbulivity, is calculated according to fit parameter values and Reynolds number oblique
The resistance coefficient of drag-line, according to resistance coefficient calculate suspension cable aerodynamic drag, can solve in the prior art due to according to compared with
Low turbulence calculates the problem of calculated result inaccuracy caused by the aerodynamic drag of suspension cable, can accurately calculate practical turbulent flow
The aerodynamic drag of suspension cable under degree is of great significance for the accuracy and science of the structure design of cable-stayed bridge.
Fig. 2 be another embodiment of the present invention provides suspension cable aerodynamic drag determination method implementation process schematic diagram.
As shown in Fig. 2, on the basis of the above embodiments, before step S101 can with the following steps are included:
Step S201: test Reynolds number and test resistance system of the test suspension cable model under different tests turbulivity are obtained
Several corresponding relationships.
Wherein, test suspension cable model can be the cylindrical body lucite tube that diameter is 450mm.
By wind tunnel test, obtains test Reynolds number and test of the test suspension cable model under different tests turbulivity and hinder
The corresponding relationship of force coefficient, specifically: the variation of test Reynolds number may be implemented by adjusting test arrives stream wind speed, it can be direct
The coefficient of wind pres on test suspension cable model is measured, resistance is then calculated according to the relationship between coefficient of wind pres and resistance coefficient
The value of force coefficient.Change the value of test Reynolds number by under same test turbulivity, changing test arrives stream wind speed, and obtains
Test resistance coefficient corresponding with test Reynolds number, available under the test turbulivity, test Reynolds number and test resistance
The corresponding relationship of coefficient；Then by changing test turbulivity, the above process is repeated, under available different tests turbulivity
Test Reynolds number and test resistance coefficient corresponding relationship.
In order to be distinguished with the suspension cable parameter of the aerodynamic drag to be calculated in embodiment illustrated in fig. 1, in wind tunnel test
All add " test " two word before parameter in the process, but its practical significance or identical.For example, the turbulent flow in wind tunnel test
Degree is known as test turbulivity；Reynolds number in wind tunnel test is known as testing Reynolds number；Resistance coefficient in wind tunnel test is known as trying
Test resistance coefficient etc..
It in embodiments of the present invention, can be original comprising practical turbulivity locating for suspension cable with highest test turbulivity
Then, choosing maximum test turbulivity is 11.0%, thus wind tunnel test operating condition can for uniform flow (background turbulivity≤
0.4%), 2.4% homogeneous turbulence, 4.5% homogeneous turbulence, 5.6% homogeneous turbulence, 8.0% homogeneous turbulence and 11.0% are uniformly rapid
Stream.Certainly, this is an example, in practical applications, can choose different test turbulivitys according to the actual situation.At this
Under example, the test resistance coefficient under different tests turbulivity obtained by wind tunnel test is with the song for testing Reynolds number variation
Line is as shown in Figure 3.In Fig. 3, Iu is test turbulivity, and Re is test Reynolds number, CDTo test resistance coefficient.
As shown in figure 3, the test resistance coefficient of test suspension cable model is with test Reynolds number when test turbulivity difference
Variation tendency is identical, is to test resistance coefficient in critical zone to increase with test Reynolds number and decline rapidly, into super
It is held essentially constant behind critical zone.The difference is that test turbulivity is different, point and entrance that test resistance coefficient is begun to decline
The point of stability region is different.Test that turbulivity is bigger, test Reynolds number of test resistance coefficient when beginning to decline is smaller, into flat
Test Reynolds number when slow area is also smaller.Such as when wind-tunnel background turbulivity uniform flow, test resistance coefficient is in test Reynolds number
About 3.3 × 105Just start to be decreased obviously, and is 1.0 × 10 in Reynolds number when turbulivity is 2.4%5When begin to have dropped.
Step S202: four are carried out to the test Reynolds number under different tests turbulivity and the corresponding relationship for testing resistance coefficient
Order polynomial the Fitting Calculation obtains test turbulivity and tests the corresponding relationship of fit parameter values.
Table 1 tests turbulivity and tests the corresponding relationship of fit parameter values
By taking Fig. 3 as an example, resistance by the test Reynolds number under different tests turbulivity in Fig. 3 and is tested by MATLAB software
The corresponding relationship of coefficient carries out quartic polynomial fitting, obtains test turbulivity and tests the corresponding relationship of fit parameter values, should
Corresponding relationship is as shown in table 1.Wherein, test fit parameter values include the first parameter value a, the second parameter value b, third parameter value c,
4th parameter value d and the 5th parameter value e, a, b, c, d, e are the dimensionless group of quartic polynomial fitting formula.
Seen from the above description, the embodiment of the present invention obtains the test Reynolds under different tests turbulivity by wind tunnel test
The corresponding relationship of number and test resistance coefficient, and to pair tested Reynolds number and test resistance coefficient under different tests turbulivity
It should be related to and carry out quartic polynomial fitting, obtain test turbulivity and test the corresponding relationship of fit parameter values, after being
The practical turbulivity of calculating under the aerodynamic drag of suspension cable lay the foundation, pass through experiment turbulivity and test fit parameter values
Corresponding relationship can accurately obtain the corresponding parameter value of practical turbulivity, according to the parameter value calculation resistance coefficient and aerodynamic drag
It is more acurrate.
As further embodiment of this invention, parameter value is determined according to turbulivity, comprising:
According to the corresponding relationship of test turbulivity and test fit parameter values, the corresponding fit parameter values of turbulivity are determined.
As further embodiment of this invention, dimension information includes the cross-sectional diameter of suspension cable, and environmental information includes incoming flow
Wind speed and atmospheric density；
The Reynolds number of suspension cable is determined according to dimension information and environmental information, comprising:
The Reynolds number of suspension cable is determined according to cross-sectional diameter, arrives stream wind speed, atmospheric density and power viscosity coefficient.
In embodiments of the present invention, it is determined according to cross-sectional diameter, arrives stream wind speed, atmospheric density and power viscosity coefficient oblique
The calculation formula of the Reynolds number of drag-line are as follows:
In formula (2), Re is the Reynolds number of suspension cable, and μ is power viscosity coefficient, and v is coefficientof kinematic viscosity, wherein v=μ/
ρ。
As further embodiment of this invention, dimension information includes the cross-sectional diameter and length of suspension cable, environmental information packet
Include arrives stream wind speed and atmospheric density；
The aerodynamic drag of suspension cable is calculated according to the resistance coefficient, dimension information and environmental information of suspension cable, comprising:
The gas of suspension cable is calculated according to the resistance coefficient of suspension cable, cross-sectional diameter, length, arrives stream wind speed and atmospheric density
Dynamic resistance.
The gas of suspension cable is calculated according to the resistance coefficient of suspension cable, cross-sectional diameter, length, arrives stream wind speed and atmospheric density
The calculation formula of dynamic resistance is formula (1).
As further embodiment of this invention, fit parameter values include the first parameter value, the second parameter value, third parameter value,
4th parameter value and the 5th parameter value；
The calculation formula of the resistance coefficient of suspension cable is calculated according to fit parameter values and Reynolds number are as follows:
CD=aRe4+bRe3+cRe2+dRe+e (3)
In formula (3), CDFor the resistance coefficient of suspension cable, Re is Reynolds number, and a is the first parameter value, and b is the second parameter value, c
For third parameter value, d is the 4th parameter value, and e is the 5th parameter value.
It should be understood that the size of the serial number of each step is not meant that the order of the execution order in above-described embodiment, each process
Execution sequence should be determined by its function and internal logic, the implementation process without coping with the embodiment of the present invention constitutes any limit
It is fixed.
Fig. 4 is the schematic block diagram of the determination system for the suspension cable aerodynamic drag that one embodiment of the invention provides, for the ease of
Illustrate, part related to the embodiment of the present invention is only shown.
In embodiments of the present invention, the determination system 4 of suspension cable aerodynamic drag includes:
Module 41 is obtained, for obtaining environmental information locating for the dimension information and suspension cable of suspension cable；
Reynolds number determining module 42, for determining the Reynolds number of suspension cable according to dimension information and environmental information；
Parameter value determining module 43 determines fit parameter values for obtaining the turbulivity of suspension cable, and according to turbulivity；
Resistance coefficient computing module 44, for calculating the resistance coefficient of suspension cable according to fit parameter values and Reynolds number；
Aerodynamic drag computing module 45 is oblique for being calculated according to the resistance coefficient, dimension information and environmental information of suspension cable
The aerodynamic drag of drag-line.
Optionally, the determination system 4 of suspension cable aerodynamic drag further include:
First corresponding relationship obtains module, for obtaining test thunder of the test suspension cable model under different tests turbulivity
The corresponding relationship of promise number and test resistance coefficient；
Second corresponding relationship obtains module, for the test Reynolds number and test resistance coefficient under different tests turbulivity
Corresponding relationship carry out quartic polynomial the Fitting Calculation, obtain test turbulivity and test fit parameter values corresponding relationship.
Optionally, parameter value determining module 43 further include:
Parameter value-determining unit determines turbulent flow for the corresponding relationship according to test turbulivity and test fit parameter values
Spend corresponding fit parameter values.
Optionally, dimension information includes the cross-sectional diameter of suspension cable, environmental information include arrives stream wind speed, atmospheric density and
Power viscosity coefficient；
Reynolds number determining module 42 includes:
Reynolds number determination unit, for being determined according to cross-sectional diameter, arrives stream wind speed, atmospheric density and power viscosity coefficient
The Reynolds number of suspension cable.
Optionally, dimension information includes the cross-sectional diameter and length of suspension cable, and environmental information includes arrives stream wind speed and sky
Air tightness；
Aerodynamic drag computing module 45 includes:
Aerodynamic drag computing unit, for according to the resistance coefficient of suspension cable, cross-sectional diameter, length, arrives stream wind speed and
The aerodynamic drag of atmospheric density calculating suspension cable.
Optionally, in resistance coefficient computing module 44, fit parameter values include the first parameter value, the second parameter value, the
Three parameter values, the 4th parameter value and the 5th parameter value；
The calculation formula of the resistance coefficient of suspension cable is calculated according to fit parameter values and Reynolds number are as follows:
CD=aRe4+bRe3+cRe2+dRe+e (3)
In formula (3), CDFor the resistance coefficient of suspension cable, Re is Reynolds number, and a is the first parameter value, and b is the second parameter value, c
For third parameter value, d is the 4th parameter value, and e is the 5th parameter value.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each function
Can unit, module division progress for example, in practical application, can according to need and by above-mentioned function distribution by different
Functional unit, module are completed, i.e., the internal structure of the determination system of the suspension cable aerodynamic drag are divided into different functions
Unit or module, to complete all or part of the functions described above.Each functional unit in embodiment, module can integrate
In one processing unit, it is also possible to each unit to physically exist alone, can also be integrated in two or more units
In one unit, above-mentioned integrated unit both can take the form of hardware realization, can also use the shape of SFU software functional unit
Formula is realized.In addition, the specific name of each functional unit, module is also only for convenience of distinguishing each other, it is not limited to this Shen
Protection scope please.The specific work process of unit in above-mentioned apparatus, module, can be with reference to the correspondence in preceding method embodiment
Process, details are not described herein.
Fig. 5 is the schematic block diagram for the terminal device that one embodiment of the invention provides.As shown in figure 5, the terminal of the embodiment
Equipment 5 includes: one or more processors 50, memory 51 and is stored in the memory 51 and can be in the processor
The computer program 52 run on 50.The processor 50 realizes above-mentioned each suspension cable gas when executing the computer program 52
Step in the determination embodiment of the method for dynamic resistance, such as step S101 to S105 shown in FIG. 1.Alternatively, the processor 50
The function of each module/unit in the determination system embodiment of above-mentioned suspension cable aerodynamic drag is realized when executing the computer program 52
Can, such as the function of module 41 to 45 shown in Fig. 4.
Illustratively, the computer program 52 can be divided into one or more module/units, it is one or
Multiple module/units are stored in the memory 51, and are executed by the processor 50, to complete the application.Described one
A or multiple module/units can be the series of computation machine program instruction section that can complete specific function, which is used for
Implementation procedure of the computer program 52 in the terminal device 5 is described.For example, the computer program 52 can be divided
It is cut into and obtains module, Reynolds number determining module, parameter value determining module, resistance coefficient computing module and aerodynamic drag calculating mould
Block.
Module is obtained, for obtaining environmental information locating for the dimension information and suspension cable of suspension cable；
Reynolds number determining module, for determining the Reynolds number of suspension cable according to dimension information and environmental information；
Parameter value determining module determines fit parameter values for obtaining the turbulivity of suspension cable, and according to turbulivity；
Resistance coefficient computing module, for calculating the resistance coefficient of suspension cable according to fit parameter values and Reynolds number；
Aerodynamic drag computing module, for calculating oblique pull according to the resistance coefficient, dimension information and environmental information of suspension cable
The aerodynamic drag of rope.
Other modules or unit can refer to the description in embodiment shown in Fig. 4, and details are not described herein.
The terminal device can be desktop PC, notebook, palm PC and cloud server etc. and calculate equipment.
The terminal device 5 includes but are not limited to processor 50, memory 51.It will be understood by those skilled in the art that Fig. 5 is only
One example of terminal device, does not constitute the restriction to terminal device 5, may include components more more or fewer than diagram,
Perhaps combine certain components or different components, for example, the terminal device 5 can also include input equipment, output equipment,
Network access equipment, bus etc..
The processor 50 can be central processing unit (Central Processing Unit, CPU), can also be
Other general processors, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor is also possible to any conventional processor
Deng.
The memory 51 can be the internal storage unit of the terminal device, such as the hard disk or interior of terminal device
It deposits.What the memory 51 was also possible to be equipped on the External memory equipment of the terminal device, such as the terminal device inserts
Connect formula hard disk, intelligent memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD) card, flash memory
Block (Flash Card) etc..Further, the memory 51 can also both include the internal storage unit of terminal device or wrap
Include External memory equipment.The memory 51 is for storing needed for the computer program 52 and the terminal device other
Program and data.The memory 51 can be also used for temporarily storing the data that has exported or will export.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in detail or remembers in some embodiment
The part of load may refer to the associated description of other embodiments.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
Scope of the present application.
In embodiment provided herein, it should be understood that the determination system of disclosed suspension cable aerodynamic drag
And method, it may be implemented in other ways.For example, the determination system embodiment of suspension cable aerodynamic drag described above
It is only schematical, for example, the division of the module or unit, only a kind of logical function partition, in actual implementation may be used
To there is an other division mode, such as multiple units or components can be combined or can be integrated into another system or some
Feature can be ignored, or not execute.Another point, shown or discussed mutual coupling or direct-coupling or communication connection
It can be through some interfaces, the INDIRECT COUPLING or communication connection of device or unit, can be electrical property, mechanical or other shapes
Formula.
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, each functional unit in each embodiment of the application can integrate in 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.
If the integrated module/unit be realized in the form of SFU software functional unit and as independent product sale or
In use, can store in a computer readable storage medium.Based on this understanding, the application realizes above-mentioned implementation
All or part of the process in example method, can also instruct relevant hardware to complete, the meter by computer program
Calculation machine program can be stored in a computer readable storage medium, the computer program when being executed by processor, it can be achieved that on
The step of stating each embodiment of the method.Wherein, the computer program includes computer program code, the computer program generation
Code can be source code form, object identification code form, executable file or certain intermediate forms etc..The computer-readable medium
It may include: any entity or device, recording medium, USB flash disk, mobile hard disk, magnetic that can carry the computer program code
Dish, CD, computer storage, read-only memory (ROM, Read-Only Memory), random access memory (RAM,
Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium etc..It should be noted that described
The content that computer-readable medium includes can carry out increasing appropriate according to the requirement made laws in jurisdiction with patent practice
Subtract, such as in certain jurisdictions, according to legislation and patent practice, computer-readable medium do not include be electric carrier signal and
Telecommunication signal.
Embodiment described above is only to illustrate the technical solution of the application, rather than its limitations；Although referring to aforementioned reality
Example is applied the application is described in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified
Or replacement, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution should all
Comprising within the scope of protection of this application.
Claims (10)
1. a kind of determination method of suspension cable aerodynamic drag characterized by comprising
Obtain environmental information locating for the dimension information and the suspension cable of suspension cable；
The Reynolds number of the suspension cable is determined according to the dimension information and the environmental information；
The turbulivity of the suspension cable is obtained, and fit parameter values are determined according to the turbulivity；
The resistance coefficient of the suspension cable is calculated according to the fit parameter values and the Reynolds number；
The pneumatic resistance of the suspension cable is calculated according to the resistance coefficient of the suspension cable, the dimension information and the environmental information
Power.
2. the determination method of suspension cable aerodynamic drag according to claim 1, which is characterized in that in the acquisition suspension cable
Dimension information and the suspension cable locating for before environmental information, further includes:
Obtain the corresponding relationship of test Reynolds number and test resistance coefficient of the test suspension cable model under different tests turbulivity；
Quartic polynomial is carried out to the test Reynolds number under the different tests turbulivity and the corresponding relationship for testing resistance coefficient
The Fitting Calculation obtains test turbulivity and tests the corresponding relationship of fit parameter values.
3. the determination method of suspension cable aerodynamic drag according to claim 2, which is characterized in that described according to the turbulent flow
It spends and determines fit parameter values, comprising:
According to the corresponding relationship of the test turbulivity and test fit parameter values, the corresponding fitting of the turbulivity is determined
Parameter value.
4. the determination method of suspension cable aerodynamic drag according to claim 1, which is characterized in that the dimension information includes
The cross-sectional diameter of the suspension cable, the environmental information include arrives stream wind speed, atmospheric density and power viscosity coefficient；
The Reynolds number that the suspension cable is determined according to the dimension information and the environmental information, comprising:
It is determined according to the cross-sectional diameter, the arrives stream wind speed, the atmospheric density and the power viscosity coefficient described oblique
The Reynolds number of drag-line.
5. the determination method of suspension cable aerodynamic drag according to claim 1, which is characterized in that the dimension information includes
The cross-sectional diameter and length of the suspension cable, the environmental information include arrives stream wind speed and atmospheric density；
The gas that the suspension cable is calculated according to the resistance coefficient, the dimension information and the environmental information of the suspension cable
Dynamic resistance, comprising:
It is close according to the resistance coefficient of the suspension cable, the cross-sectional diameter, the length, the arrives stream wind speed and the air
Degree calculates the aerodynamic drag of the suspension cable.
6. the determination method of suspension cable aerodynamic drag according to any one of claims 1 to 5, which is characterized in that described quasi-
Closing parameter value includes the first parameter value, the second parameter value, third parameter value, the 4th parameter value and the 5th parameter value；
The calculation formula of the resistance coefficient that the suspension cable is calculated according to the fit parameter values and the Reynolds number are as follows:
CD=aRe4+bRe3+cRe2+ dRe+e,
Wherein, CDFor the resistance coefficient of the suspension cable, Re is the Reynolds number, and a is first parameter value, and b is described second
Parameter value, c are the third parameter value, and d is the 4th parameter value, and e is the 5th parameter value.
7. a kind of determination system of suspension cable aerodynamic drag characterized by comprising
Module is obtained, for obtaining environmental information locating for the dimension information and the suspension cable of suspension cable；
Reynolds number determining module, for determining the Reynolds number of the suspension cable according to the dimension information and the environmental information；
Parameter value determining module determines fit parameter values for obtaining the turbulivity of the suspension cable, and according to the turbulivity；
Resistance coefficient computing module, for calculating the resistance system of the suspension cable according to the fit parameter values and the Reynolds number
Number；
Aerodynamic drag computing module, for the resistance coefficient, the dimension information and the environmental information according to the suspension cable
Calculate the aerodynamic drag of the suspension cable.
8. the determination system of suspension cable aerodynamic drag according to claim 7, which is characterized in that further include:
First corresponding relationship obtains module, for obtaining test Reynolds number of the test suspension cable model under different tests turbulivity
With the corresponding relationship of test resistance coefficient；
Second corresponding relationship obtains module, for the test Reynolds number and test resistance coefficient under the different tests turbulivity
Corresponding relationship carry out quartic polynomial the Fitting Calculation, obtain test turbulivity and test fit parameter values corresponding relationship.
9. a kind of terminal device, including memory, processor and storage are in the memory and can be on the processor
The computer program of operation, which is characterized in that the processor realizes such as claim 1 to 6 when executing the computer program
The step of determination method of any one suspension cable aerodynamic drag.
10. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage has computer journey
Sequence realizes the suspension cable gas as described in any one of claim 1 to 6 when the computer program is executed by one or more processors
The step of determination method of dynamic resistance.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116070333A (en) * | 2023-03-16 | 2023-05-05 | 石家庄铁道大学 | Stay cable aerodynamic force calculation method, system and terminal considering Reynolds number effect |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104239622A (en) * | 2014-09-04 | 2014-12-24 | 河海大学 | Windmill wake flow calculation method |
| CN106284075A (en) * | 2016-09-23 | 2017-01-04 | 石家庄铁道大学 | Bifilar helix hot extruded polyethylene half parallel steel wire suspension cable and parameter determination method thereof |
| CN106872140A (en) * | 2017-03-06 | 2017-06-20 | 西北工业大学 | The method that different wind speed downstream turbulivitys are measured based on cylinder model |
| CN109190283A (en) * | 2018-09-20 | 2019-01-11 | 中国科学院工程热物理研究所 | A kind of wind mill airfoil Aerodynamic optimization method considering high Turbulent Free incoming flow effect |
-
2018
- 2018-11-09 CN CN201811331530.9A patent/CN109388912A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104239622A (en) * | 2014-09-04 | 2014-12-24 | 河海大学 | Windmill wake flow calculation method |
| CN106284075A (en) * | 2016-09-23 | 2017-01-04 | 石家庄铁道大学 | Bifilar helix hot extruded polyethylene half parallel steel wire suspension cable and parameter determination method thereof |
| CN106872140A (en) * | 2017-03-06 | 2017-06-20 | 西北工业大学 | The method that different wind speed downstream turbulivitys are measured based on cylinder model |
| CN109190283A (en) * | 2018-09-20 | 2019-01-11 | 中国科学院工程热物理研究所 | A kind of wind mill airfoil Aerodynamic optimization method considering high Turbulent Free incoming flow effect |
Non-Patent Citations (2)
| Title |
|---|
| 刘庆宽等: "《缠绕螺旋线的斜拉桥斜拉索平均气动阻力特性的试验研究》", 《土木工程学报》 * |
| 吴玉书: "《湍流度对绕流物体气动力特性的影响》", 《吉林大学学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116070333A (en) * | 2023-03-16 | 2023-05-05 | 石家庄铁道大学 | Stay cable aerodynamic force calculation method, system and terminal considering Reynolds number effect |
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