CN207366172U - A kind of model wind tunnel test floor plasma boundary layer control device - Google Patents
A kind of model wind tunnel test floor plasma boundary layer control device Download PDFInfo
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- CN207366172U CN207366172U CN201721429974.7U CN201721429974U CN207366172U CN 207366172 U CN207366172 U CN 207366172U CN 201721429974 U CN201721429974 U CN 201721429974U CN 207366172 U CN207366172 U CN 207366172U
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Abstract
The utility model discloses a kind of model wind tunnel test floor plasma boundary layer control device, including：Test-bed floor, offers four notches, four notches besieged city rectangular configuration thereon；Model support frame, it is arranged on below the test-bed floor and is not in contact with it, and is used to support test model；Force balance, it is fixed at below the model support frame, for detecting the stress of test model；Supporting case, it is the closed structure of inner hollow, its top opens up slot with the notch corresponding position, and the model support frame and force balance are fixedly installed on the supporting case inner bottom surface, and the supporting case exterior top surface is used to support the test-bed floor.Plasma boundary layer control device in model wind tunnel test floor described in the utility model, can reduce model wind tunnel test floor boundary layer thickness, simple in structure, easy to operate.
Description
Technical field
Automobile wind tunnel experimental technique field is the utility model is related to, more particularly, the utility model is related to a kind of model
Wind tunnel test floor plasma boundary layer control device.
Background technology
On road when driving, air and automobile storage are in relative motion, in the opposite of Chinese herbaceous peony different height overdraught for automobile
Speed is constant, equal to automobile driving speed U.During wind tunnel experiment, due to the presence of surface boundary layer, make near wall speed compared with
It is small, cause incoming be averaged dynamic pressure reduction, and boundary layer in flow process can gradually it is thickening, be easy to cause experiment and measure pneumatically
Power deviates actual value.
To eliminate influence of the floor boundary layer to experimental result, test the control method taken be mainly boundary layer blowing-off,
Suction, coordinates hole in the ground ground system, its control effect is preferable, but there is also complicated, expensive, arrangement inconvenience etc. is asked
Topic, meanwhile, different automobile types will also ressemble test system.
Utility model content
The purpose of this utility model is to have designed and developed a kind of model wind tunnel test floor plasma boundary layer control dress
Put, model wind tunnel test floor boundary layer thickness can be reduced, it is simple in structure, it is easy to operate.
Technical solution provided by the utility model is：
A kind of model wind tunnel test floor plasma boundary layer control device, including：
Test-bed floor, offers four notches, four notches besieged city rectangular configuration thereon；
Model support frame, it is arranged on below the test-bed floor and is not in contact with it, and is used to support test model；
Force balance, it is fixed at below the model support frame, for detecting the stress of test model；
Supporting case, it is the closed structure of inner hollow, its top opens up slot, the model with the notch corresponding position
Supporting rack and force balance are fixedly installed on the supporting case inner bottom surface, and the supporting case exterior top surface is used to support the examination
Test rack floor.
Preferably, the model support frame includes：
First support plate, its both sides axially open up two parallel grooves along vertical test rack floor；
First cross bar and the second cross bar, its is parallel to each other and is slideably connected with the sliding slot, its axial both ends difference
It is provided with slide；
Multiple sliding blocks, its be slidably disposed on first cross bar and the second cross bar bar, two wood side-guide and with the groove
Mouth is corresponding；
Multiple studdles, it is separately positioned on the sliding block, is used to support the test model.
Preferably, further include：
First screw hole, it is arranged on corresponding with the sliding slot the first cross bar and the second cross bar,
First screw rod, it is through the sliding slot and passes through first screw hole；
First nut, it is connected with first screw rod, for fixing first cross bar and the second cross bar.
Preferably, further include：
Second screw hole, it is arranged on sliding block corresponding with the slide,
Second screw rod, it is through the slide and passes through second screw hole；
Second nut, it is connected with second screw rod, for fixing the sliding block.
Preferably, multiple support columns are further included, it is connected with the supporting case Corner Strapped, is used to support the support
Box.
Preferably, test-bed floor leading edge is fillet in the horizontal direction, is vertically downward chamfering.
Preferably, the notch size is corresponding with the moving range of its first internal screw rod and the second screw rod.
Preferably, the second support plate is further included, its corner is connected with the support column bottom, for fixing the support
Column.
Preferably, further include：
Plasma Actuator, it is arranged on the test-bed floor in front of the forward notch；
Wind tunnel system, it is arranged in front of the test-bed floor.
Preferably, the Plasma Actuator includes：
Multiple bare electrodes, its gap be arranged on the Plasma Actuator outer surface and with Plasma Actuator electricity
Source high-voltage output end connection；
Multiple buried electrodes, its be arranged on inside insulating dielectric materials between the two neighboring bare electrode and with etc.
Gas ions driver power supply low-voltage output connects；
Wherein, adjacent to have certain distance and in preceding bare electrode and in rear buried electrodes for one group, each group is exposed
It is in parallel between electrode and buried electrodes.
The utility model at least possesses following beneficial effect：
(1) plasma boundary layer control device in model wind tunnel test floor described in the utility model, can reduce mould
Type wind tunnel test floor boundary layer thickness, it is simple in structure, it is easy to operate；Various is can adapt to, reduces cost.
(2) plasma boundary layer control device in model wind tunnel test floor described in the utility model, when not working
Stream field is noiseless, without motion part, avoids mechanical wear and the possibility of damage, and rapid with work response, and performance is steady
It is fixed, it is low in energy consumption, the advantages that adjusting.
(3) by the floor surface arrangement plasma excitation in front of model, increase the energy of air in boundary layer, produce
Prolong floor surface jet stream, the induced draft of 0-5m/s, while the injection of the jet stream can be highly produced in floor near wall 0.5-1mm
Air near electrode is pulled to electrode by effect, by the energy transport in mainstream into boundary layer, in the collective effect of both
Under, floor boundary layer thickness can be made to be reduced to below 5mm, and then reduce test error.
Brief description of the drawings
Fig. 1 is the structural representation of plasma boundary layer control device in model wind tunnel test floor described in the utility model
Figure.
Fig. 2 is the structural representation of plasma boundary layer control device in model wind tunnel test floor described in the utility model
Figure.
Fig. 3 is the structure diagram of model support frame described in the utility model.
Fig. 4 is the structure diagram of model support frame described in the utility model.
Fig. 5 is the structure diagram of Plasma Actuator described in the utility model.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to explanation
Book word can be implemented according to this.
The utility model can have many different forms to implement, and should not be construed as limited to the implementation illustrated again
Example, conversely, there is provided these embodiments so that the disclosure will be thorough and complete.In the accompanying drawings, for clarity, can overstate
Big structure and the size and relative size in region.
As shown in Figs. 1-5, the utility model provides a kind of model wind tunnel test floor plasma boundary layer control device,
Including：Test-bed floor 100, offers four notches 110, four notches 110 besieged city rectangular configuration thereon；Model branch
Support 300, it is arranged on the lower section of test-bed floor 100 and is not in contact with it, is used to support test model and (does not show in figure
Go out)；Force balance 200, it is fixed at the lower section of model support frame 300, for detecting the stress of test model；Support
Box 400, it is the closed structure of inner hollow, and the closing of supporting case 400 can avoid incoming from directly affecting balance stress, thereon
Square to open up slot 410 with 110 corresponding position of notch, the model support frame 300 and force balance 200 are fixedly installed on described
400 inner bottom surface of supporting case, 400 exterior top surface of supporting case are used to support the test-bed floor, avoid test-bed
Floor 100 contacts with model support frame 300 and influences the stress of force balance 200.
As another embodiment of the utility model, the model support frame 300 includes：First support plate 310, its both sides
Two parallel grooves 311 are opened up along vertical test rack floor 100 is axial；First cross bar 320 and the second cross bar 330, its is mutual
Parallel and be slideably connected with the sliding slot 311, its axial both ends is respectively arranged with slide 321；Multiple sliding blocks 340, it can
It is slidably arranged on described 330 liang of wood side-guides of first support bar 320 and second support bar and corresponding with the notch 110；It is more
A studdle 341, it is separately positioned on the sliding block 340, is used to support the test model, while can also adjust examination
Test the height on modal distance test-bed floor 100.In the present embodiment, further include：First screw hole 322, its be arranged on it is described
On corresponding first cross bar, 320 and second cross bar 330 of sliding slot 311, the first screw rod 323, it is through the sliding slot 311 and passes through institute
State the first screw hole 322；First nut 324, it is connected with first screw rod 323, for fixing first cross bar 320 and
Two cross bars 330.Further include：Second screw hole 342, it is arranged on sliding block 340 corresponding with the slide 321, the second screw rod
343, it is through the slide 321 and passes through second screw hole 342；Second nut 344, it connects with second screw rod 343
Connect, for fixing the sliding block 340.
As another embodiment of the utility model, multiple support columns 500 are further included, itself and 400 4 jiaos of the supporting case
It is fixedly connected, is used to support the supporting case 400；Preferably, further include：Second support plate 510, its corner and the support column
500 bottoms connect, for fixing the support column 500.
As another embodiment of the utility model, 100 leading edge of test-bed floor is fillet in the horizontal direction, can
Wind tunnel test when meeting crosswind with drift angle；It is vertically downward chamfering, reduces 100 front end of test-bed floor to air-flow
The interference in direction.110 size of notch is corresponding with the moving range of its first internal screw rod 323 and the second screw rod 343,
Wheelspan and the wheelbase of test model be can conveniently adjust to adapt to different automobile types.
As another embodiment of the utility model, further include：Plasma Actuator 600, it is arranged on described forward
On the test-bed floor 100 in the front of notch 110；Wind tunnel system (not shown), it is arranged on the test-bed floor
100 fronts.In the present embodiment, the Plasma Actuator 600 includes：Multiple bare electrodes 610, its gap are arranged on described
Plasma Actuator outer surface is simultaneously connected with Plasma Actuator power supply high-voltage output end HV；Multiple buried electrodes 620, its
The inside of insulating dielectric materials 630 that is arranged between the two neighboring bare electrode and with Plasma Actuator power supply low pressure
Output terminal LV connections；Wherein, it is adjacent to there is certain distance and in preceding bare electrode and in rear buried electrodes for one group, each group
It is in parallel between bare electrode and buried electrodes, multigroup intensity being parallel with beneficial to enhancing induced draft and adsorption capacity.This implementation
In example, the naked 0 dew electrode 610 and buried electrodes 620 are three groups.
As another embodiment of the utility model, the width a1 of the bare electrode 610 is less than 2mm, and thickness d 1 is less than
0.05mm, reduces the interference in air flow of electrode stream field itself as far as possible；The width a2 of the buried electrodes 620 is 5~8mm, thick
Degree d2 is 0.5~1mm；Distance d3 of the bare electrode 610 along 100 radial direction of test-bed floor and buried electrodes 620
For 2~3mm；The buried electrodes 620 are along the axial bare electrode 610 nearest with its front in the test-bed floor 100
Distance a3 is 10~15mm, and the distance a4 of the bare electrode 620 nearest with its rear is 19-23mm, it is preferred that described to bury electricity
Pole 620 is nearest with its rear along the distance a3 of the axial bare electrode 610 nearest with its front in the test-bed floor 100
Bare electrode 610 distance a4 half, in the present embodiment, the buried electrodes 620 are along 110 axis of test-bed floor
The distance a3 of nearest bare electrode 610 is 10mm in front of Xiang Yuqi, and the distance a4 of the bare electrode 610 nearest with its rear is
20mm。
As another embodiment of the utility model, the insulating dielectric materials 630 preferentially select such as polyimides, quartz
The relatively low material of the dielectric constants such as glass, the electrode are copper electrode, improve electric conductivity.
As another embodiment of the utility model, the test model front end and 100 leading edge of test-bed floor
Distance L be 800~1200mm, be preferably 1000mm；The distance d4 of the test model and the Plasma Actuator 600
It is preferably 200mm for 100~300mm.
Plasma boundary layer control device in model wind tunnel test floor described in the utility model, can reduce model wind
Hole experimental field edges of boards thickness of boundary layer, it is simple in structure, it is easy to operate；Various is can adapt to, reduces cost；When not working pair
Flow field is noiseless, without motion part, avoids mechanical wear and the possibility of damage, and rapid with work response, and performance is stablized,
It is low in energy consumption, the advantages that adjusting；By the floor surface arrangement plasma excitation in front of model, increase air in boundary layer
Energy, generation prolong floor surface jet stream, the induced draft of 0-5m/s can be highly produced in floor near wall 0.5-1mm, at the same time should
Air near electrode is pulled to electrode by the ejector action of jet stream, by the energy transport in mainstream into boundary layer, at both
Collective effect under, floor boundary layer thickness can be made to be reduced to below 5mm, and then reduce test error.
Although the embodiment of the utility model is disclosed as above, it is not restricted in specification and embodiment
Listed utilization, it can be applied to the field of various suitable the utility model completely, for those skilled in the art,
Other modification is easily achieved, therefore under the universal limited without departing substantially from claim and equivalency range, this reality
Specific details is not limited to new and shown here as the legend with description.
Claims (10)
- A kind of 1. model wind tunnel test floor plasma boundary layer control device, it is characterised in that including：Test-bed floor, offers four notches, four notches besieged city rectangular configuration thereon；Model support frame, it is arranged on below the test-bed floor and is not in contact with it, and is used to support test model；Force balance, it is fixed at below the model support frame, for detecting the stress of test model；Supporting case, it is the closed structure of inner hollow, its top opens up slot, the model support with the notch corresponding position Frame and force balance are fixedly installed on the supporting case inner bottom surface, and the supporting case exterior top surface is used to support the testing stand Frame floor.
- 2. plasma boundary layer control device in model wind tunnel test floor as claimed in claim 1, it is characterised in that described Model support frame includes：First support plate, its both sides axially open up two parallel grooves along vertical test rack floor；First cross bar and the second cross bar, its is parallel to each other and is slideably connected with the sliding slot, its axial both ends is set respectively There is slide；Multiple sliding blocks, its be slidably disposed on first cross bar and the second cross bar, two wood side-guide and with the notch pair Should；Multiple studdles, it is separately positioned on the sliding block, is used to support the test model.
- 3. plasma boundary layer control device in model wind tunnel test floor as claimed in claim 2, it is characterised in that also wrap Include：First screw hole, it is arranged on corresponding with the sliding slot the first cross bar and the second cross bar,First screw rod, it is through the sliding slot and passes through first screw hole；First nut, it is connected with first screw rod, for fixing first cross bar and the second cross bar.
- 4. plasma boundary layer control device in model wind tunnel test floor as claimed in claim 3, it is characterised in that also wrap Include：Second screw hole, it is arranged on sliding block corresponding with the slide,Second screw rod, it is through the slide and passes through second screw hole；Second nut, it is connected with second screw rod, for fixing the sliding block.
- 5. plasma boundary layer control device in model wind tunnel test floor as claimed in claim 1, it is characterised in that also wrap Multiple support columns are included, it is connected with the supporting case Corner Strapped, is used to support the supporting case.
- 6. plasma boundary layer control device in model wind tunnel test floor as claimed in claim 1, it is characterised in that described Test-bed floor leading edge is fillet in the horizontal direction, is vertically downward chamfering.
- 7. plasma boundary layer control device in model wind tunnel test floor as claimed in claim 4, it is characterised in that described Notch size is corresponding with the moving range of its first internal screw rod and the second screw rod.
- 8. plasma boundary layer control device in model wind tunnel test floor as claimed in claim 5, it is characterised in that also wrap The second support plate is included, its corner is connected with the support column bottom, for fixing the support column.
- 9. plasma boundary layer control device in model wind tunnel test floor as claimed in claim 1, it is characterised in that also wrap Include：Plasma Actuator, it is arranged on the test-bed floor in front of the forward notch；Wind tunnel system, it is arranged in front of the test-bed floor.
- 10. plasma boundary layer control device in model wind tunnel test floor as claimed in claim 9, it is characterised in that institute Stating Plasma Actuator includes：Multiple bare electrodes, its gap are arranged on the Plasma Actuator outer surface and high with Plasma Actuator power supply Press output terminal connection；Multiple buried electrodes, it is arranged on inside the insulating dielectric materials between the two neighboring bare electrode and and plasma Body driver power supply low-voltage output connects；Wherein, it is adjacent to there is certain distance and in preceding bare electrode and in rear buried electrodes for one group, each group bare electrode It is in parallel between buried electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721429974.7U CN207366172U (en) | 2017-10-30 | 2017-10-30 | A kind of model wind tunnel test floor plasma boundary layer control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721429974.7U CN207366172U (en) | 2017-10-30 | 2017-10-30 | A kind of model wind tunnel test floor plasma boundary layer control device |
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| Publication Number | Publication Date |
|---|---|
| CN207366172U true CN207366172U (en) | 2018-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721429974.7U Expired - Fee Related CN207366172U (en) | 2017-10-30 | 2017-10-30 | A kind of model wind tunnel test floor plasma boundary layer control device |
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| CN (1) | CN207366172U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540453A (en) * | 2018-11-26 | 2019-03-29 | 吉林大学 | A kind of wind tunnel test rack of dimensional airfoil |
| CN110031180A (en) * | 2019-05-15 | 2019-07-19 | 吉林大学 | A kind of wheelbase can automatic adjustable two-purpose car wind tunnel test platform and its control method |
| CN116499686A (en) * | 2023-06-29 | 2023-07-28 | 中国航空工业集团公司沈阳空气动力研究所 | Ground high-speed ejection simulation system and simulation method for wind tunnel test |
-
2017
- 2017-10-30 CN CN201721429974.7U patent/CN207366172U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540453A (en) * | 2018-11-26 | 2019-03-29 | 吉林大学 | A kind of wind tunnel test rack of dimensional airfoil |
| CN109540453B (en) * | 2018-11-26 | 2024-02-20 | 吉林大学 | Wind tunnel test bench of two-dimensional wing section |
| CN110031180A (en) * | 2019-05-15 | 2019-07-19 | 吉林大学 | A kind of wheelbase can automatic adjustable two-purpose car wind tunnel test platform and its control method |
| CN110031180B (en) * | 2019-05-15 | 2024-05-17 | 吉林大学 | Dual-purpose automobile wind tunnel test platform with automatically adjustable wheelbase and control method thereof |
| CN116499686A (en) * | 2023-06-29 | 2023-07-28 | 中国航空工业集团公司沈阳空气动力研究所 | Ground high-speed ejection simulation system and simulation method for wind tunnel test |
| CN116499686B (en) * | 2023-06-29 | 2023-08-22 | 中国航空工业集团公司沈阳空气动力研究所 | Ground high-speed ejection simulation system and simulation method for wind tunnel test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180515 Termination date: 20211030 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |