CN102539109A - Rotating bracket for wind-tunnel flow-field display test models - Google Patents
Rotating bracket for wind-tunnel flow-field display test models Download PDFInfo
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- CN102539109A CN102539109A CN2012100169171A CN201210016917A CN102539109A CN 102539109 A CN102539109 A CN 102539109A CN 2012100169171 A CN2012100169171 A CN 2012100169171A CN 201210016917 A CN201210016917 A CN 201210016917A CN 102539109 A CN102539109 A CN 102539109A
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Abstract
The invention discloses a rotating bracket for wind-tunnel flow-field display test models, and the rotating bracket is provided for solving the problems that in a wind-tunnel flow-field display test, the adjustment on the levelness and rotating angle of the traditional test model is inconvenient and not high in precision. A bottom plate of the bracket is provided with a height adjusting bolt and a level instrument so as to meet the requirements on the levelness of the test model; the edge of a top plate of the bracket is provided with an angle scale line, and a rotating plate is arranged above the top plate, then the model can be rotated quickly and accurately so as to adjust the test model to a required wind attack angle; and besides the wind-tunnel flow-field display test, the bracket also takes the demands of a pressure measuring test for wind tunnels into consideration, holes are arranged in the centers of the top plate and the rotating plate so as to facilitate the connection between a pressure measuring pipe at the bottom of the model and a pressure measuring device below a floor board of a wind tunnel. The rotating bracket disclosed by the invention can be used for solving the problem that in a wind-tunnel flow-field display test, the manual adjustment on the levelness and rotating angle of a model is poor in precision; and the rotating bracket not only can be applied to wind-tunnel flow-field display tests on pure building structure scaled models in wind tunnels, but also can be applied to synchronous pressure measuring tests.
Description
Technical field
Flow Field in Wind Tunnel shows in the test that the streamline and the velocity field that need to take building structure scaled model surface under the multiple wind angle usually distribute, thereby need repeatedly rotating model in test, to simulate different wind angles.The present invention has effectively improved the efficient and the precision of angular adjustment for a kind of Flow Field in Wind Tunnel of adjustment model angle that makes things convenient for shows the test model runing rest.
Background technology
The flow field display technique is an important component part of fluid mechanics test; Particle image velocimetry (Particle Image Velocimetry wherein; Abbr. be on the basis of traditional flow field display technique PIV), utilize the achievement in research of optical technology and image analysis technology and the new flow field means of testing that shoots up.The important feature of PIV technology is exactly the limitation that has broken through space spot measurement technology, can be in the information in synchronization is noted whole measurement plane, and then obtain plane velocity field, vorticity field and eddy stress distribution etc.Along with the development of PIV technology, external most of researchist directly applies to the PIV method in the wind tunnel test of building structure scaled model, with the vortex on observation structure surface, stream phenomenon.The ultimate principle of PIV is following: in the flow field, sow suitable trace particle, the laser light sheet that sends of pulsed laser can doublely illuminate tested flow field then, through image capturing system, notes t respectively
1, t
2Flow field particle picture (its time interval ⊿ t accurate and adjustable) constantly; Through the displacement of particle in the Digital Image Processing Qiu Chu ⊿ t, and then obtain the trace particle velocity field, further Treatment Analysis just can obtain the flow field information such as velocity field, vorticity field, streamline in whole flow field.
Flow Field in Wind Tunnel shows that the layout of test in wind-tunnel is as shown in Figure 1, and wherein model 32 generally places wind-tunnel section 31 centers, and pulsed laser 33 places the wind-tunnel top.Because the wind tunnel side wall bottom is that solid transparent materials and wind tunnel floor are bigger to the test influence on flow field; This just causes CCD camera 34 directly to shelve on the ground; But should raise shooting; Thereby support 35 need be set in the test, and also correspondingly frame is high fixing with model, makes the model height basic highly consistent with CCD camera 34, so that CCD camera 34 can effectively be caught the flow field information of model top.
Building structure model in the actual wind tunnel test has asymmetry usually; And most different wind directions of consideration that need in the operating condition of test design; Present in addition PIV tests employed pulsed laser to have stationarity and is difficult for scalability; Traditional method is that testing crew gets into wind-tunnel, through repeatedly moving support and model to reach the desired wind angle of attack.Yet because the heaviness of model support is not strong with reference to property with adjustment, especially under the situation of having set the multiple test wind angle of attack, this traditional method makes the adjustment precision of the model wind angle of attack be difficult to be guaranteed.In addition, the trace particle system that sows in the PIV test produces through smog, and this smog has certain toxicity, exposes to the open air in this trace particle environment bigger to the human injury for a long time.Should have time enough to carry out the adjustment of model angle in the test and reach accuracy requirement, avoid again exposing to the open air for a long time in the smog environment, this just shows that to Flow Field in Wind Tunnel test has proposed the requirement that precision and efficient walk abreast.
Summary of the invention
The present invention provides a kind of Flow Field in Wind Tunnel demonstration test model runing rest that building structure wind-tunnel flow field shows test that is used for.The present invention can adjust the relative angle of model and incoming flow in the wind tunnel test rapidly, continuously; And can adjust the support level flatness exactly, so that lay test model reposefully.
The present invention adopts following technical scheme:
A kind of Flow Field in Wind Tunnel shows the test model runing rest, and comprising: base plate that is parallel to each other and top board are provided with sub-truss at base plate and top board; On top board, be provided with center hole, on the circumference of center hole, be provided with flange, on flange, be arranged with swivel plate; On swivel plate, be provided with tuning drive gear and some model set bolts; On top board, be provided with the scale mark that is used with tuning drive gear, on top board, be provided with spacing button, and spacing button one end is fixedly connected with top board; The other end is positioned at swivel plate edge top face, at the spacing spacing set bolt that has been threaded of buckling.
The present invention further adopts following technical measures:
On base plate, be provided with first level meter and second level meter and height adjustment bolt; Described first level meter and the second level meter quadrature arrangement; Said height adjustment bolt is connected with base thread and the head of height adjustment bolt passes base plate; Head in height adjustment bolt is provided with bulb, and height adjustment bolt is through the bulb rubber blanket that has been rotatably connected.
Beneficial effect:
Building structure model in the actual wind tunnel test has asymmetry usually; And most different wind directions of consideration that need in the operating condition of test design; Present in addition PIV tests employed pulsed laser to have stationarity and is difficult for scalability; Traditional method is that testing crew gets into wind-tunnel, through repeatedly moving support and model to reach the desired wind angle of attack.Yet because the heaviness of model support is not strong with reference to property with adjustment, especially under the situation of having set the multiple test wind angle of attack, this traditional method makes the adjustment precision of the model wind angle of attack be difficult to be guaranteed.In addition, the trace particle system that sows in the PIV test produces through smog, and this smog has certain toxicity, exposes to the open air in this trace particle environment bigger to the human injury for a long time.Should have time enough to carry out the adjustment of model angle in the test and reach accuracy requirement, avoid again exposing to the open air for a long time in the smog environment, this just shows that to Flow Field in Wind Tunnel test has proposed the requirement that precision and efficient walk abreast.
The invention provides a kind of simple structure, Flow Field in Wind Tunnel easy to process shows the test model runing rest: at base plate level meter and height adjustment bolt are set, have solved the problem of support level degree adjustment; The universal joint that frame bottom coupling bolt and rubber blanket are adopted can effectively be avoided the influence of ground out-of-flatness to the cradle top surface levelness.And the frame bottom rubber blanket can provide enough side-friction forces.Additional swivel plate and angle index line are established tuning drive gear on the top board on the swivel plate, and both cooperations can be fast, accurate rotating model needed angle extremely.
This support has satisfied the demand of Flow Field in Wind Tunnel demonstration test model support height on the one hand, has quick accurate, the levelness characteristics easy to adjust of angle rotation on the other hand, has avoided moving the modal position error that model is introduced because of manual work.Regulate model quickly and easily to required orientation, among the smog of effectively having avoided operating personnel to be exposed to trace particle for a long time being produced, reduced its injury human body.
Top board, base plate and swivel plate all adopt steel plate to process, between top board and base plate through adopting the leverage sub-truss to be connected; Swivel plate and the perforate of top board center, and at top board central hole reservation flange, swivel plate is enclosed within on this flange, top board and swivel plate can rotate in face is carried out at the center; The top board edge is provided with spacing button, withstands swivel plate after the spacing set bolt of buckling is tightened, and retrains relatively rotating between top board and swivel plate thus.Some bolts are set on the swivel plate, are used for being connected of model in wind tunnel and swivel plate; The top board edge is provided with the angle index line, and swivel plate is provided with pointer scale, and both cooperate to confirm the model relative rotation angle.Base plate is provided with first level meter and second level meter of height adjustment bolt and quadrature arrangement; The bulb of height adjustment bolt end is imbedded in the rubber blanket; The transfer of rubber blanket when preventing to forward height adjustment bolt on the one hand; The influence of avoiding height adjustment bolt and base plate verticality difference that levelness is regulated on the other hand; Thereby have a good horizontal adjustment function, the irregular situation in applicable ground; The side direction antiskid that support improves in the effect of rubber blanket system moves bearing capacity, avoids that the beam wind load is excessive to be caused the support slippage or micro breadth oscillation occurs and then influence the model test result.
Another effect of top board and swivel plate center drilling is that in the time need carrying out the model manometric test piezometric tube can be derived, be connected on the pressure instrumentataion through this hole.
Description of drawings
Further the present invention will be described below in conjunction with accompanying drawing and embodiment.
PIV testing tool and modal position figure in Fig. 1 wind-tunnel.
Fig. 2 support elevation drawing.
Fig. 3 support planimetric map.
1-1 section among Fig. 4 Fig. 2.
2-2 section among Fig. 5 Fig. 3.
Fig. 6 height adjustment bolt and rubber blanket.
Fig. 7 support 3-D view.
Have among the above figure: wind-tunnel section 31, model in wind tunnel 32, pulsed laser 33, CCD camera 34, model support 35;
Swivel plate 1, top board 2, base plate 3, sub-truss 4, spacing button 5, spacing set bolt 6, height adjustment bolt 7, flange 8, model set bolt 9, tuning drive gear 10, first level meter 21, second level meter 22, rubber blanket 12, scale mark 13.
Embodiment
A kind of Flow Field in Wind Tunnel shows the test model runing rest, comprising: the base plate 3 and the top board 2 that are parallel to each other are provided with sub-truss 4 at base plate 3 and top board 2; On top board 2, be provided with center hole; On the circumference of center hole, be provided with flange 8, on flange 8, be arranged with swivel plate 1, on swivel plate 1, be provided with tuning drive gear 10 and some model set bolts 9; On top board 2, be provided with the scale mark 13 that is used with tuning drive gear 10, with the anglec of rotation of accurate location model.
On top board 2, be provided with spacing button 5, and spacing button 5 one ends are fixedly connected with top board 2, the other end is positioned at swivel plate 1 edge top face, and spacing set bolt 6 has been threaded on spacing button 5.On base plate 3, be provided with first level meter 21 and second level meter 22 and height adjustment bolt 7; Described first level meter 21 and second level meter, 22 quadrature arrangement; Said height adjustment bolt 7 is threaded with base plate 3 and the head of height adjustment bolt 7 passes base plate 3; Head in height adjustment bolt 7 is provided with bulb 14, and height adjustment bolt 7 is through bulb 14 rubber blanket 12 that has been rotatably connected.
Claims (2)
1. a Flow Field in Wind Tunnel shows the test model runing rest, it is characterized in that, comprising: base plate that is parallel to each other (3) and top board (2); Be provided with sub-truss (4) at base plate (3) and top board (2); On top board (2), be provided with center hole, on the circumference of center hole, be provided with flange (8), on flange (8), be with swivel plate (1); On swivel plate (1) model, be provided with tuning drive gear (10) and some model set bolts (9); On top board (2), be provided with the scale mark (13) that is used with tuning drive gear (10), on top board (2), be provided with spacing button (5), and spacing button (5) one ends be fixedly connected with top board (2); The other end is positioned at swivel plate (1) edge top face, and spacing set bolt (6) has been threaded on spacing button (5).
2. Flow Field in Wind Tunnel according to claim 1 shows the test model runing rest; It is characterized in that; On base plate (3), be provided with first level meter (21) and second level meter (22) and three height adjustment bolt (7); Described first level meter (21) and second level meter (22) quadrature arrangement; Said height adjustment bolt (7) is threaded with base plate (3) and the head of height adjustment bolt (7) passes base plate (3), is provided with bulb (14) at the head of height adjustment bolt (7), and height adjustment bolt (7) is through bulb (14) rubber blanket (12) that has been rotatably connected.
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| CN201210016917.1A CN102539109B (en) | 2012-01-19 | 2012-01-19 | Rotating bracket for wind-tunnel flow-field display test models |
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| CN201210016917.1A CN102539109B (en) | 2012-01-19 | 2012-01-19 | Rotating bracket for wind-tunnel flow-field display test models |
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| CN102539109A true CN102539109A (en) | 2012-07-04 |
| CN102539109B CN102539109B (en) | 2014-02-26 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104408703A (en) * | 2014-11-28 | 2015-03-11 | 中国航空工业空气动力研究院 | Wind tunnel dynamic test piece optical flow visualization system and image phase averaging method thereof |
| CN106153287A (en) * | 2015-04-08 | 2016-11-23 | 大连理工大学 | A kind of device for fixing wind-tunnel wedge |
| CN107290123A (en) * | 2017-06-07 | 2017-10-24 | 中国航天空气动力技术研究院 | The big angle of attack device of multiple degrees of freedom wind-tunnel |
| CN108007957A (en) * | 2017-12-26 | 2018-05-08 | 中国航天空气动力技术研究院 | A kind of model support attack angle mechanism |
| CN108115399A (en) * | 2017-12-04 | 2018-06-05 | 北京星航机电装备有限公司 | The special-shaped long welded tube screw switching installation method of cambered surface Mulit-point Connection cover board long and narrow space |
| CN108132131A (en) * | 2017-12-22 | 2018-06-08 | 郑州大学 | The device and method of the structures under wind experiment zero degree wind angle of attack is determined using garage's sailing |
| CN108615546A (en) * | 2018-03-26 | 2018-10-02 | 郑州航空工业管理学院 | A kind of measurement Gear Root residual stress angle regulator |
| CN109297669A (en) * | 2018-11-07 | 2019-02-01 | 中南大学 | Orographic winds field characteristic wind tunnel test test macro and test method |
| CN110231138A (en) * | 2019-06-06 | 2019-09-13 | 南京大学 | A kind of flow tunnel testing device and application method |
| CN110319999A (en) * | 2019-07-31 | 2019-10-11 | 中国航发沈阳发动机研究所 | Carry out the system and method for turbulent flow screen honeycomb PIV optical test based on cascade wind tunnel |
| CN110608866A (en) * | 2019-10-21 | 2019-12-24 | 大连理工大学 | Multifunctional conversion device for wind tunnel test of floating offshore platform structure and use method thereof |
| CN112556979A (en) * | 2021-02-22 | 2021-03-26 | 中国空气动力研究与发展中心低速空气动力研究所 | Synchronous rotation control device and method for upper and lower turnplates of wind tunnel test section |
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Cited By (17)
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| CN104408703A (en) * | 2014-11-28 | 2015-03-11 | 中国航空工业空气动力研究院 | Wind tunnel dynamic test piece optical flow visualization system and image phase averaging method thereof |
| CN106153287A (en) * | 2015-04-08 | 2016-11-23 | 大连理工大学 | A kind of device for fixing wind-tunnel wedge |
| CN106153287B (en) * | 2015-04-08 | 2018-06-15 | 大连理工大学 | A kind of device for being used to fix wind-tunnel wedge |
| CN107290123A (en) * | 2017-06-07 | 2017-10-24 | 中国航天空气动力技术研究院 | The big angle of attack device of multiple degrees of freedom wind-tunnel |
| CN107290123B (en) * | 2017-06-07 | 2019-05-24 | 中国航天空气动力技术研究院 | The big angle of attack device of multiple degrees of freedom wind-tunnel |
| CN108115399A (en) * | 2017-12-04 | 2018-06-05 | 北京星航机电装备有限公司 | The special-shaped long welded tube screw switching installation method of cambered surface Mulit-point Connection cover board long and narrow space |
| CN108115399B (en) * | 2017-12-04 | 2019-08-06 | 北京星航机电装备有限公司 | The special-shaped long welded tube screw switching installation method of cambered surface Mulit-point Connection cover board long and narrow space |
| CN108132131A (en) * | 2017-12-22 | 2018-06-08 | 郑州大学 | The device and method of the structures under wind experiment zero degree wind angle of attack is determined using garage's sailing |
| CN108007957A (en) * | 2017-12-26 | 2018-05-08 | 中国航天空气动力技术研究院 | A kind of model support attack angle mechanism |
| CN108615546B (en) * | 2018-03-26 | 2023-05-02 | 郑州航空工业管理学院 | Angle adjusting device for measuring residual stress of gear tooth root |
| CN108615546A (en) * | 2018-03-26 | 2018-10-02 | 郑州航空工业管理学院 | A kind of measurement Gear Root residual stress angle regulator |
| CN109297669A (en) * | 2018-11-07 | 2019-02-01 | 中南大学 | Orographic winds field characteristic wind tunnel test test macro and test method |
| CN110231138A (en) * | 2019-06-06 | 2019-09-13 | 南京大学 | A kind of flow tunnel testing device and application method |
| CN110231138B (en) * | 2019-06-06 | 2024-03-19 | 南京大学 | Wind tunnel test device and use method |
| CN110319999A (en) * | 2019-07-31 | 2019-10-11 | 中国航发沈阳发动机研究所 | Carry out the system and method for turbulent flow screen honeycomb PIV optical test based on cascade wind tunnel |
| CN110608866A (en) * | 2019-10-21 | 2019-12-24 | 大连理工大学 | Multifunctional conversion device for wind tunnel test of floating offshore platform structure and use method thereof |
| CN112556979A (en) * | 2021-02-22 | 2021-03-26 | 中国空气动力研究与发展中心低速空气动力研究所 | Synchronous rotation control device and method for upper and lower turnplates of wind tunnel test section |
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