CN205483486U - Can be used to three -dimensional measuring low speed wind tunnel of wind speed - Google Patents
Can be used to three -dimensional measuring low speed wind tunnel of wind speed Download PDFInfo
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- CN205483486U CN205483486U CN201620087753.5U CN201620087753U CN205483486U CN 205483486 U CN205483486 U CN 205483486U CN 201620087753 U CN201620087753 U CN 201620087753U CN 205483486 U CN205483486 U CN 205483486U
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Abstract
The utility model relates to an use the computational fluid dynamics field, specifically disclose a can be used to three -dimensional measuring low speed wind tunnel of wind speed, connect gradually and constitute by fan, stable section, broad sense contraction section, experiment segment, diffusion section, and the entrance of experiment segment installation honeycomb and disorderly flow net, the dimension parameter of fan does: the diameter is 1500mm, is length 1300 1500mm, the export cross -section of stable section becomes the square of the length of side for 1500mm, the honeycomb adopts square check, is the length of experiment segment 5200 5600mm, is the length of diffusion section 1400 1600mm, the diffusion angle is 6. The utility model discloses in can satisfying the not high experiment of required precision, the measurement in model flow field. Especially, to like the wind tunnel experiment and the data measurement of the model of great the ratio of width to height of true terrain model. The utility model discloses can realize that the entry for the circle, exports the smooth connection into the reducer of rectangle, wherein round radius size between the rectangle long with slightly punish between little.
Description
Technical field
This utility model relates to computation hydrodynamics (CFD, Computational Fluid Dynamics) field,
A kind of low-speed wind tunnel that can be used for wind speed and direction three-dimensional measurement.
Background technology
Wind-tunnel, is by artificially generated and control air-flow, to produce the assay device meeting the air-flow that simulation requires.At wind-tunnel
In can control to generate uniform air-flow, it is also possible to control to generate wind speed along the turbulent flow of height change.Along with human sciences's technology
Means improve constantly, and wind tunnel test is widely deployed in the middle of the every field of industry, such as: fly in aerospace industry
The simulation of row device aerodynamic characteristics；For automobile, the simulation of the aerodynamic characteristics of train in automotive industry；Environmental conservation
The central simulation for atmosphere pollution diffusion；The various large-span structure of building industry, high-level structure, tall and slender structure and various
The wind environment simulation of ground structures and security performance assessing.It can be said that the convenient and peace of inhabitation of the current traffic of the mankind
Entirely, the achievement of wind tunnel test all it is be unable to do without.
Relative to high-speed wind tunnel, the application of low-speed wind tunnel is the most extensive, development is more complete, more.Low-speed wind tunnel, has
Direct-action wind tunnel divides with return circuit wind tunnel.
Opening once-through type low-speed wind tunnel, the fan air blast of power section produces air-flow, and air-flow is entered wind-tunnel by the air inlet section in left side；
Stable section carries out combing by arranging Cellular Networks and antivibrator to air-flow；The section of contraction section wind-tunnel reduces, it is possible to make air-flow
Accelerate, and make air flow direction consistent, velocity-stabilization；In the core experimental section of whole wind-tunnel, can be to atmospheric boundary
Layer is simulated and carries out blow test；At the diffuser of wind-tunnel afterbody, air velocity reduces, and arranging diffuser can subtract
The energy consumption of little wind-tunnel.The advantage of opening direct-action wind tunnel is that cost is low.Shortcoming is its air-flow outer circulation mode meeting used
Affected by outside atmosphere change and low temperature, and compared to return circuit wind tunnel of remaining silent, its energy consumption is relatively big, and produces
Noise very big, be not suitable for using for a long time.
Remain silent return circuit wind tunnel, be actually and direct-action wind tunnel is carried out head and the tail connect so that in wind-tunnel, air-flow can circulate
Backflow, and stitch by arranging pressure regulation, to realize supplementing of air-flow.Remain silent return circuit wind tunnel compared to opening direct-action wind tunnel energy
Consuming relatively low, and the quality of wind-tunnel flow field will not be affected by ambient atmosphere, the noise of generation is the least, but remains silent back
The wind-tunnel of streaming is also high, is suitable for the situation that wind-tunnel utilization rate is high.
Utility model content
The purpose of this utility model is to provide a kind of low-speed wind tunnel that can be used for wind speed and direction three-dimensional measurement, to solve the above-mentioned back of the body
The problem proposed in scape technology.
For achieving the above object, the following technical scheme of this utility model offer:
A kind of low-speed wind tunnel that can be used for wind speed and direction three-dimensional measurement, by blower fan, stable section, broad sense contraction section, experimental section,
Diffuser is sequentially connected with composition, and honeycomb and turbulent flow net are installed in the porch of experimental section；The dimensional parameters of blower fan is: diameter
For 1500mm, a length of 1300-1500mm；The outlet of stable section becomes the square that the length of side is 1500mm；Honeycomb
Device uses square grid；The a length of 5200-5600mm of experimental section；The a length of 1400-1600mm of diffuser, angle of flare
It it is 6 °.
As further program of the utility model: a length of 1400mm of blower fan.
As further program of the utility model: the entrance section shape of broad sense contraction section and the outlet shape of stable section
Identical, the outlet of broad sense contraction section is shaped as rectangle.
As further program of the utility model: a length of 200mm of stable section.
As further program of the utility model: length and the bore of square grid are respectively 13-17cm and 90cm.
As further program of the utility model: turbulent flow net is 2 layers, and the spacing of adjacent two layers is at a distance of 20-30cm.
As further program of the utility model: a length of 5400mm of experimental section.
As further program of the utility model: a length of 1500mm of diffuser.
As further program of the utility model: experimental model is placed in the position away from experimental section entrance 2000m-3000mm.
Compared with prior art, the beneficial effects of the utility model are: this utility model can meet the reality that required precision is the highest
In testing, the measurement in model flow field.The wind tunnel experiment of model and data especially for the relatively aspect ratio such as real terrain model
Measure.It is circle that this utility model can realize entrance, exports the smooth connection of the reducer into rectangle, and wherein round radius is big
Little between rectangle length and roomy little between.
Accompanying drawing explanation
Fig. 1 is existing apparatus structural representation；
Fig. 2 is structural representation of the present utility model；
In figure: 1-blower fan, 2-stable section, 3-broad sense contraction section, 4-honeycomb, 5-turbulent flow net, 6-experimental section, 7-diffuser.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out clearly
Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise
The every other embodiment obtained, broadly falls into the scope of this utility model protection.
In order to natural wind simulating blows over the process of typical case's landform, and measure corresponding wind speed, need to design and produce one accordingly
Small-sized wind tunnel.On the one hand, the model that experiment is used is the simplification scaled down version of the shape of true massif, but the ratio of width to height is relative
Bigger；On the other hand, the cross-sectional sizes of wind-tunnel is related to the size of power of fan type selecting, so on the basis of eligible,
Reduce wind-tunnel sectional area, the requirement of these two aspects so that the wind-tunnel sectional area of final design is the square of a 3m × 1m as far as possible
Shape.The flow tunnel testing device the most come into operation, needed for all can not meeting experiment.So a kind of spy of designed, designed
The low-speed wind tunnel used under fixed condition.
Wind energy engineering is that Mach number Ma is less than 0.4 to the definition of low-speed wind tunnel, and air-flow regards the wind-tunnel of incompressible fluid as
For low-speed wind tunnel.General wind-tunnel is made up of these several parts such as power section, stable section, contraction section, experimental section, diffusers:
Power section is to install one section of hole body of fan, provides air flow for wind-tunnel.The effect of stable section is that the air-flow making disorder is steady
Decide, improve direction and the uniformity of speed of air-flow.General layout honeycomb and damping screen in stable section.Contraction section
Main Function be improve experimental section flow quality, improve the uniformity in flow field, stability and reduce turbulivity.This section
The part of wind tunnel experiment is carried out for model.This part is the core of wind-tunnel, putting and the survey of experimental data of model
Amount is all partially completed at this.The Main Function of diffuser is to make air-flow expand, and reduces flow velocity, it is therefore an objective to reduce energy loss,
Reduce energy consumption.
Embodiment 1
Refer to Fig. 1-2, a kind of low-speed wind tunnel that can be used for wind speed and direction three-dimensional measurement, set according to special experimental section size
Meter, consists of the following components: the dimensional parameters of blower fan 1 is: a diameter of 1500mm, a length of 1400mm.Model
For SWF type series of low noise flow-mixing blower fan 15C, under declared working condition, air quantity is 99369m3/ h, power is 45kW.Wind
Machine 1 is exactly the power section of this experimental provision.One section of blower fan 1 200mm afterwards, becomes square stable section 2 for circle.Surely
The outlet of the section of determining 2 becomes the square that the length of side is 1500mm.After stable section, for broad sense contraction section 3.This section enters
Mouth is identical with the outlet shape of stable section 2, and outlet is shaped as the rectangle of 3m × 1m.It is the experiment of wind-tunnel afterwards
Section 6, this part is the core of wind-tunnel, model put and the measurement of experimental data is all partially completed at this.
Owing to the cross-sectional area of experimental section 6 is that whole wind-tunnel is maximum, so be mounted with honeycomb 4 and turbulent flow net in experimental section porch
5, make air-flow gradually settle out and the little whirlpool of the remaining that decays after the gauze on honeycomb 4 and turbulent flow net 5.Herein
Honeycomb 4 takes into account economy and loss coefficient uses square grid, and length and bore are respectively 15cm and 90cm.Turbulent flow net
5 is 2 layers, and the spacing of adjacent two layers should be at a distance of 25 centimetres.The a length of 5400mm of whole experimental section 6.It is followed by expanding
Pressure section 7, a length of 1500mm, angle of flare is 6 °.
The size of wind-tunnel Wind Field flow velocity, by the converter regulation matched with blower fan 1.Model placement location is away from experimental section
The place of 6 entrance 2000m to 3000mm.Wind speed use the two-dimensional measurement of DANTEC company 55P61 model pop one's head in into
Row is measured.
After blower fan 1 is opened, regulate wind speed size by converter.Wind, through stable section 2, broad sense contraction section 3, uniformly fills
Full whole wind-tunnel pipeline.Through honeycomb 4 and turbulent flow net 5 so that the air-flow of output more stable and uniform, enter experimental section
6.Experimental section 6 exit flow enters diffuser 7, prevents wind-tunnel tail wind from producing backflow, does experimental section 6 flow field
Disturb.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of spirit or essential attributes of the present utility model, it is possible to realize this utility model in other specific forms.
Therefore, no matter from the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, this practicality is new
The scope of type is limited by claims rather than described above, it is intended that by the containing of equivalency in claim that fall
All changes in justice and scope are included in this utility model.Should not be considered as any reference in claim limiting
Involved claim.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only comprises
One independent technical scheme, this narrating mode of description is only the most for clarity sake, and those skilled in the art should be by
Description is as an entirety, and the technical scheme in each embodiment can also be through appropriately combined, and forming those skilled in the art can
With other embodiments understood.
Claims (8)
1. the low-speed wind tunnel that can be used for wind speed and direction three-dimensional measurement, it is characterised in that be sequentially connected with formed by blower fan, stable section, broad sense contraction section, experimental section, diffuser, and experimental section porch install honeycomb with turbulent flow net；The dimensional parameters of blower fan is: a diameter of 1500mm, a length of 1300-1500mm；The outlet of stable section becomes the square that the length of side is 1500mm；Honeycomb uses square grid；The a length of 5200-5600mm of experimental section；The a length of 1400-1600mm of diffuser, angle of flare is 6 °.
The low-speed wind tunnel that can be used for wind speed and direction three-dimensional measurement the most according to claim 1, it is characterised in that a length of 1400mm of blower fan.
The low-speed wind tunnel that can be used for wind speed and direction three-dimensional measurement the most according to claim 1, it is characterised in that the entrance section shape of broad sense contraction section is identical with the outlet shape of stable section, and the outlet of broad sense contraction section is shaped as rectangle.
The low-speed wind tunnel that can be used for wind speed and direction three-dimensional measurement the most according to claim 1, it is characterised in that a length of 200mm of stable section.
The low-speed wind tunnel that can be used for wind speed and direction three-dimensional measurement the most according to claim 1, it is characterised in that length and the bore of square grid are respectively 13-17cm and 90cm.
The low-speed wind tunnel that can be used for wind speed and direction three-dimensional measurement the most according to claim 1, it is characterised in that turbulent flow net is 2 layers, and the spacing of adjacent two layers is at a distance of 20-30cm.
The low-speed wind tunnel that can be used for wind speed and direction three-dimensional measurement the most according to claim 1, it is characterised in that a length of 5400mm of experimental section.
The low-speed wind tunnel that can be used for wind speed and direction three-dimensional measurement the most according to claim 1, it is characterised in that a length of 1500mm of diffuser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620087753.5U CN205483486U (en) | 2016-01-29 | 2016-01-29 | Can be used to three -dimensional measuring low speed wind tunnel of wind speed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620087753.5U CN205483486U (en) | 2016-01-29 | 2016-01-29 | Can be used to three -dimensional measuring low speed wind tunnel of wind speed |
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| CN205483486U true CN205483486U (en) | 2016-08-17 |
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| CN201620087753.5U Expired - Fee Related CN205483486U (en) | 2016-01-29 | 2016-01-29 | Can be used to three -dimensional measuring low speed wind tunnel of wind speed |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956082A (en) * | 2018-09-20 | 2018-12-07 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of rectangular nozzle |
| CN110531107A (en) * | 2019-09-09 | 2019-12-03 | 中国科学技术大学 | The monitoring support component and monitoring test equipment of large scale brattice wind field |
| CN112685954A (en) * | 2020-12-29 | 2021-04-20 | 中国航天空气动力技术研究院 | Method and device for predicting wind speed and fan rotating speed of automobile environment wind tunnel |
-
2016
- 2016-01-29 CN CN201620087753.5U patent/CN205483486U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956082A (en) * | 2018-09-20 | 2018-12-07 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of rectangular nozzle |
| CN110531107A (en) * | 2019-09-09 | 2019-12-03 | 中国科学技术大学 | The monitoring support component and monitoring test equipment of large scale brattice wind field |
| CN112685954A (en) * | 2020-12-29 | 2021-04-20 | 中国航天空气动力技术研究院 | Method and device for predicting wind speed and fan rotating speed of automobile environment wind tunnel |
| CN112685954B (en) * | 2020-12-29 | 2023-10-03 | 中国航天空气动力技术研究院 | Method and device for predicting wind speed and fan rotating speed of automobile environment wind tunnel |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20170129 |
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| CF01 | Termination of patent right due to non-payment of annual fee |