CN108593251A - A kind of probe rides and movable measuring device measuring the flowing of cell wall near-wall region - Google Patents
A kind of probe rides and movable measuring device measuring the flowing of cell wall near-wall region Download PDFInfo
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- CN108593251A CN108593251A CN201810711040.5A CN201810711040A CN108593251A CN 108593251 A CN108593251 A CN 108593251A CN 201810711040 A CN201810711040 A CN 201810711040A CN 108593251 A CN108593251 A CN 108593251A
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- motor
- survey
- normal direction
- flow direction
- cell wall
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention discloses the probe rides and movable measuring device of a kind of flowing of measurement cell wall near-wall region, it is therefore intended that solves the present situation for lacking transonic wind tunnel cell wall near-wall region flow behavior measurement means at present.It includes probe rides unit, flow direction moves survey control unit, normal direction moves and surveys control unit.Probe rides unit includes fixed cover and nosed two parts, and probe installing hole is formed in nosed.The present invention can obtain the characteristic distributions of wears groove flow performance amount as early as possible by testing train number on a small quantity, in favor of the Accuracy Verification of cell wall near-wall region flow field survey, analysis and cell wall boundary condition.Using mode in indoor location, influence of the test device to test section primary air can be reduced, ensure the accuracy of wears groove flowing test；The synchronous control surveyed is moved using normal direction and flow direction, can realize wears groove flowing normal direction and flows to the synchro measure of characteristic quantity distribution, the distribution character of wears groove flow performance amount is quickly obtained, improves testing efficiency and accuracy.
Description
Technical field
The present invention relates to experimental aerodynamics field, a kind of specially measurement transonic wind tunnel cell wall near-wall region is flowed
Probe rides and movable measuring device.
Background technology
Fluting is one of main ventilative form of transonic wind tunnel test section siding.Within the scope of high subsonic speed, with hole wall phase
Than cell wall, which has, interferes the characteristics such as small, noise is low, processing is easy to adjust, is increasingly becoming the development trend of transonic wind tunnel, evening
When the capital equipment that builds up（Such as NTF, ETW）It has been all made of fluting form.Not with the solid wall of low-speed wind tunnel or opening boundary
Together, fluting boundary can induce the wears groove between room and test section to flow, which directly affects the globality of transonic wind tunnel
Can, including flow field uniformity, blocking interference and wave reflection interference and Mach number amendment characteristic etc..In addition, with near-wall model spy
Property relevant cell wall boundary condition or wind tunnel wall interference assessment and correction technique important link.The operation warp of external advanced wind-tunnel
It tests and shows that the development of wind tunnel wall interference characteristic research should be based on the Study of Flow Characteristics of near-wall region, mainly near-wall region is flowed
The development of dynamic measuring technology, the means such as siding induced velocity field modeling analysis.
Ventilative flowing caused by fluting keeps hole wall borderline region flow abnormalities complicated, flow direction, siding pressure difference and opens
There are serious coupling effects between slot parameter, and near-wall model characteristic is not only related with the geometric parameter of fluting, but also and wall surface
The factor relations such as boundary layer, model blocking are close, and the difficulty that accurate description and analysis are carried out using mathematical model is larger；Numerical-Mode
Quasi- aspect complicated notching construction and makes numerical simulation in a short time can not be real the suction in boundary layer influence in near-wall region
It is existing；In terms of experiment, the key of test is to realize wears groove stream within the scope of high subsonic speed under the premise of smaller to wears groove flowing interference
Dynamic characteristic quantity（Air-flow drift angle, when ground pressure etc.）Along the distribution measuring of siding normal direction and airflow direction, have test scope big, smart
Degree requires high difficult point.
Traditional pressure measurement rake method interferes near-wall model point that be larger, and being unable to measure local static pressure streamwise
Cloth, and wall pressure informa tion method is only capable of measuring the distribution of near-wall region pressure, to wears groove flowing angle, local velocity and viscosity loss etc.
Characteristic quantity is unable to measure.
For these reasons, at present home and abroad wind tunnel experiment mechanism cell wall interferential loads mostly use based on ideal, irrotationality,
The ideal cell wall mean boundary condition of microvariations supposed premise has ignored due to normal velocity single order caused by wears groove flowing viscosity
It is influenced with second order term, the dominating coefficient magnitude in boundary condition is obtained by empirical method or large and small model dynamometry contrast method of experiment.
Therefore, development cell wall near-wall region flow measurement means help to analyze trepanning, grooving parameters to test section flow field
Influence, have great importance for instructing wind-tunnel pneumatic design and equipment debugging to work.
Invention content
The goal of the invention of the present invention is：Lack transonic wind tunnel cell wall near-wall region flow behavior measurement hand for current
The present situation of section proposes a kind of probe rides and movable measuring device measuring the flowing of cell wall near-wall region.The present invention is to provide one kind
The probe support of novel, removable survey can be quickly obtained wears groove on the basis of accurate, reliable by testing train number on a small quantity
The characteristic distributions of flow performance amount, in favor of the accuracy of cell wall near-wall region flow field survey, analysis and cell wall boundary condition
Verification.
To achieve the goals above, the present invention adopts the following technical scheme that：
A kind of probe rides and movable measuring device measuring the flowing of cell wall near-wall region, including probe rides unit, flow direction move observing and controlling
Unit processed, normal direction, which are moved, surveys control unit；
The probe rides unit includes the nosed that fixed cover and fixed cover are fixed with one, and nosed forms probe
Mounting hole；
It includes for the sliding rail on test section on floor in room, motor supporting base, drive that the flow direction, which moves and surveys control unit,
Dynamic motor, shaft coupling, ball-screw, sliding support, flow direction, which are moved, surveys stay wire displacement sensor, and the ball-screw includes flow direction
Move survey lead screw, with flow direction move survey the matched ball nut of lead screw, the motor supporting base, sliding support respectively with sliding rail phase
Even and sliding rail can be respectively motor supporting base, sliding support offer support, and the driving motor is mounted on motor supporting base
And motor supporting base can provide support for driving motor, the flow direction moves survey lead screw and is movably connected with sliding support and slides branch
Support member can move for flow direction to be surveyed lead screw and provide support, the shaft of the driving motor by shaft coupling and flow direction move survey lead screw be connected and
The shaft of driving motor can drive flow direction to move the ball nut surveyed on lead screw and be moved relative to sliding rail；
The normal direction move survey control unit include the motor mount being connected with ball nut, run through motor, guide sleeve, guide rod,
Normal direction, which is moved, surveys stay wire displacement sensor；It is described through motor be mounted on motor mount on and motor mount can be through electricity
Machine provides support, and the guide sleeve is connected with motor mount, and the guide rod is adopted across guide sleeve and guide rod and guide sleeve
With being slidably connected；The guide rod, through motor normal direction move survey lead screw be connected respectively with probe rides unit and through motor lead to
Crossing normal direction shifting survey lead screw can drive probe rides unit to be moved relative to motor mount；
It is described flow direction move survey stay wire displacement sensor one end with flow direction move survey control unit end be fixedly connected, the other end and
The motor mount that normal direction moves survey control unit is connected；
The normal direction moves one end of survey stay wire displacement sensor and normal direction is moved survey unit and is fixedly connected, the other end and probe rides list
Member is connected.
Preferably, the sliding support includes the screw mandrel support seat being fixedly connected with sliding rail, for being provided for lead screw
The lead screw fixing bracket of support, the lead screw fixing bracket are fixedly connected with screw mandrel support seat.
The sliding rail is connected by screw or screw rod with floor in room on test section.
The guide sleeve is mounted on motor mount and passes through motor mount.
The guide sleeve is copper sheathing.
Several pin holes are provided on the motor mount, it further includes fixed pin that the normal direction, which moves and surveys unit, the electricity
Machine mounting base is connected by fixed pin, pin hole with ball nut.
The pin hole is two to five.
One end that stay wire displacement sensor is surveyed in the flow direction shifting is installed on the end of ball-screw or sliding rail.
One end that the normal direction moves survey stay wire displacement sensor is connected with motor mount.
Traditional near-wall region measurement means, if pressure measurement is harrowed, the methods of wall pressure pipe is not particularly suited for wears groove flow behavior amount
Measurement, main cause is the distribution character that can not obtain the characteristic quantities such as air-flow drift angle, pressure along siding normal direction and flow direction, and
The factors such as its instrument processing of measurement result tested person, installation are affected, and can not accurately reflect the truth of wears groove flowing.
In view of conventional transonic wind tunnel be equipped with volume it is larger stay room, therefore, the present invention use Yi Ce mechanisms and list
The form of point probe combination measures cell wall near-wall region flow behavior.The main thought of this method is by motor, sliding rail, silk
Bar and shaft coupling etc. flow to device and are mounted in interior, and penetration type motor and copper sheathing/guide-bar mechanism is utilized to realize the method for probe
To movement, the influence that integrated model flows wears groove is reduced by the support device of shape Fine design, is passed based on bracing wire displacement
Sensor realizes the real-time control and feedback of probe location, realizes the normal direction of cell wall near-wall region flow performance amount and flows to same pacing
Amount.
In the present invention, stay wire displacement sensor includes flowing to displacement and Normal Displacement two, flows to the survey of displacement sensor
Amount end moves observing and controlling system motor mounting base with the normal direction and is connected；The measurement end of Normal Displacement sensor and probe rides unit
It is connected.Meanwhile it flowing to shifting survey control unit and being installed on cell wall test section in room.Normal direction is moved survey control unit and is installed by motor
Seat and ball nut, which are fixed on flow direction and move, to be surveyed the flow direction of control unit and moves and survey on lead screw, end successively it is fixed through motor, copper sheathing,
Guide rod and probe rides unit.Probe rides unit is fixed on normal direction by guide rod and moves in survey control unit, by running through motor
It realizes that the normal direction along cell wall is moved to survey, probe rides unit is wedge shaped to reduce the influence for flowing wears groove, and passes through interior six side reality
Now installed with the cooperation of probe.
In order to reach superior technique effect, by fixed finger setting between normal direction shift measurement system and slider nut, realize
The Fast Installation of system and accurate positionin.
In order to reach superior technique effect, flow between the motor shaft of shift measurement system and roller bearing lead screw through shaft coupling phase
Even, kinematic error caused by mechanism difference axis is avoided.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
（1）The support movable measuring device of the present invention includes probe rides unit, flow direction moves survey control unit, normal direction moves and surveys control unit
Deng overall structure is simplified, at low cost；Using mode in indoor location, shadow of the test device to test section primary air can be reduced
It rings, ensures the accuracy of wears groove flowing test；The synchronous control surveyed is moved using normal direction and flow direction, can realize that wears groove flows normal direction
With the synchro measure for flowing to characteristic quantity distribution, it is quickly obtained the distribution character of wears groove flow performance amount, improves testing efficiency and standard
Exactness；
（2）The support movable measuring device of the present invention ensures the verticality of normal direction movement by copper sheathing and guide rod, not will produce due to machine
Do not block caused by structure stand under load, it is highly practical and safe；
（3）The support movable measuring device of the present invention ensures the mobile concentricity of flow direction by shaft coupling, effectively reduces motor shaft and rolling
Flow direction caused by axial filament bar installation deviation, which is moved, surveys deviation, and easy to control, precision is high and disclosure satisfy that different experiment conditions；
（4）The support movable measuring device sliding rail of the present invention is installed on test section on the siding of room, is held out against in cell wall by screw
On floor, the sliding rail of different trips can be selected according to equipment actual demand, it is versatile；
（5）The support movable measuring device of the present invention uses modularized design, integral installation and convenient for disassembly and assembly to be convenient for entire movable measuring device
Movement, improve prepare efficiency.
Description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein：
Fig. 1 is the overall structure diagram of device in embodiment 1.
Fig. 2 is the overall structure diagram of another angle of device in embodiment 1.
Fig. 3 is that flow direction moves driving motor and roller bearing lead screw connection diagram in survey unit in Fig. 1.
Fig. 4 is that normal direction is moved in survey unit through motor and guide rod connection diagram in Fig. 1.
Fig. 5 is Fig. 1 middle probes support unit and guide rod connection diagram.
It is marked in figure：1, flow direction, which is moved, surveys stay wire displacement sensor, 2, sliding rail, 3, motor supporting base, 4, motor mount, 5,
Normal direction, which is moved, surveys lead screw, 6, shaft coupling, 7, driving motor, 8, guide rod, 9, run through motor, 10, normal direction move and survey stay wire displacement sensor,
11, probe rides unit, 12, flow direction move and survey lead screw, 21, screw mandrel support seat, 22, lead screw fixing bracket, 31, fixed pin, 32, lead
To set, 33, ball nut, 51, nosed, 52, probe installing hole, 53, fixed cover.
Specific implementation mode
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification unless specifically stated can be equivalent or with similar purpose by other
Alternative features are replaced.That is, unless specifically stated, each feature is an example in a series of equivalent or similar characteristics
.
Embodiment 1
The present embodiment provides a kind of probe rides of cell wall near-wall region flow measurement being applied to 0.6 meter of transonic wind tunnel to move survey
Device, it is 1100mm that flow direction, which moves and surveys stroke, covers the model section length of the wind-tunnel；It is 80mm that normal direction, which moves and surveys stroke, and covering should
Wind-tunnel flute wall surfaces shear layer and the air-flow of side in room mixing height.
Wherein, support the overall structure of movable measuring device as shown in Figure 1 and Figure 2.Device uses modularized design, is divided into probe
Support unit, flow direction, which are moved, surveys unit and normal direction shifting survey three major parts of unit.
Wherein, probe rides unit includes fixed cover, nosed, as shown, nosed forms probe installing hole.
In the structure, fixed cover is connected as one with nosed, and probe installing hole is then used to install probe.Probe rides unit with lead
Type of attachment between bar is shown in that Fig. 5, probe rides unit are fixed on normal direction by guide rod and through the normal direction shifting survey lead screw of motor
It moves and surveys on unit.
In addition, flow direction move survey unit include sliding rail, flow direction move survey stay wire displacement sensor, motor supporting base, driving motor,
Shaft coupling, ball-screw, sliding support.In the present embodiment, ball-screw includes that flow direction moves survey lead screw, moved with flow direction and survey lead screw
Matched ball nut, sliding support include the lead screw fixing bracket that screw mandrel support seat and screw mandrel support seat are fixedly linked；
Sliding rail is held out against by screw on floor in room, motor supporting base, screw mandrel support seat are fixedly connected with sliding rail respectively on test section,
Flow direction moves survey lead screw and is movably connected with lead screw fixing bracket.In the structure, lead screw fixing bracket is used to move survey lead screw for flow direction and carry
For support, sliding rail can be respectively motor supporting base, screw mandrel support seat offer support.Driving motor is mounted on motor supporting base
On, the shaft of driving motor is connected with flow direction shifting survey lead screw by shaft coupling and the shaft of driving motor can drive flow direction shifting to survey silk
Ball nut on bar is moved relative to sliding rail.In the present embodiment, flow direction moves survey stay wire displacement sensor and is installed on ball-screw
End is installed on sliding rail, and the motor mount that measurement end moves survey unit with normal direction is connected.
Meanwhile normal direction move survey unit include the motor mount being connected with ball nut, run through motor, guide sleeve, guide rod,
Normal direction, which is moved, surveys stay wire displacement sensor.Wherein, run through motor to be mounted on motor mount, motor mount can be through electricity
Machine provides support.Guide sleeve is connected with motor mount, and guide rod is connected across guide sleeve and guide rod and guide sleeve using sliding
It connects.Guide rod, through motor normal direction move survey lead screw be connected respectively with probe rides unit, and through motor pass through normal direction move survey silk
Bar can drive probe rides unit to be moved relative to motor mount, and the cooperation of guide rod and guide sleeve can then play probe rides unit
To guiding role.One end that normal direction moves survey stay wire displacement sensor is fixedly connected with motor mount, the other end and probe rides
Unit is connected.In the present embodiment, guide sleeve is mounted on motor mount and passes through motor mount, guide sleeve to use copper sheathing.
Further, several pin holes are provided on motor mount, it further includes fixed pin that normal direction, which moves and surveys unit, and motor mount passes through solid
The connection with ball nut is realized in the cooperation of rationed marketing and pin hole.
Type of attachment between motor and guide rod as shown in figure 4, connection type be followed successively by ball nut, fixed pin,
Motor mount, copper sheathing, normal direction, which are moved, surveys lead screw.Fixed pin is for connecting motor mount and ball nut, on motor mount
Multiple and different position pin holes are distributed with, can realize that Fast Installation and the position adjustment of normal direction shift measurement system, the copper sheathing in Fig. 4 are used for
Ensure that mechanism moves the verticality surveyed along cell wall normal direction, need to be lubricated with butter before use, is produced after mechanism stand under load during avoiding shifting from surveying
Raw not card.
When the device works, the shaft of driving motor moves survey lead screw with flow direction by shaft coupling and is connected, and then drives ball
The ball nut of leading screw moves, the design of shaft coupling then can effectively avoid due to run caused by different axis not Ka and normal direction position
Set the failures such as deviation, the normal operation of safeguards system.
The workflow of the support movable measuring device of the present invention is as follows.
（1）Flow direction is first moved survey unit on ground to install, including driving motor, shaft coupling, ball-screw, flow direction are moved and surveyed
Stay wire displacement sensor.
（2）Again ground by normal direction move survey unit install, including motor mount, guide rod, through motor, normal direction move survey
Lead screw, normal direction, which are moved, surveys stay wire sensor.
（3）On ground, probe is installed in probe rides unit, probe front is stretched out by probe installing hole, it is ensured that visit
Coordinate secured, non-loosening between needle and probe rides unit.
（4）Sliding rail is installed on test section and stays room, is held out against by screw.
（5）By（2）Mounted normal direction shifting survey unit is walked to be connected on ball nut by fixed pin.
（6）By（3）Mounted probe rides unit is walked to be fixed on normal direction by guide rod and normal direction shifting survey lead screw and move survey
On unit.
By above-mentioned steps after installation is complete, you can carry out the flow behavior measurement experiment of cell wall near-wall region, normal direction and stream
Carry out traverse measurement can be synchronized to distribution character, obtains the distribution of the characteristic quantities such as air-flow drift angle, pressure.
I.e. the present invention expands to any new feature disclosed in the present specification or any new combination, and times disclosed
The step of one new method or process or any new combination.
Claims (8)
1. a kind of probe rides and movable measuring device measuring the flowing of cell wall near-wall region, which is characterized in that including probe rides list
Member, flow direction move and survey control unit, normal direction moves and surveys control unit；
The probe rides unit includes nosed two parts that fixed cover and fixed cover are fixed with one, nosed shape
At probe installing hole；
It includes sliding rail, motor supporting base, the driving electricity being mounted on test section on floor in room that the flow direction, which moves and surveys control unit,
Machine, shaft coupling, ball-screw, sliding support, flow direction, which are moved, surveys stay wire displacement sensor, and the ball-screw includes flowing to move to survey
Lead screw, with flow direction move survey the matched ball nut of lead screw, the motor supporting base, sliding support be connected respectively with sliding rail and
Sliding rail can be respectively motor supporting base, sliding support offer support, and the driving motor is mounted on motor supporting base and electricity
Machine support base can provide support for driving motor, and the flow direction moves survey lead screw and is movably connected with sliding support, and slidably supports
Part can move survey lead screw for flow direction and provide support, and the shaft of the driving motor surveys lead screw with flow direction shifting by shaft coupling and is connected, and
The shaft of driving motor can drive flow direction to move the ball nut surveyed on lead screw and be moved relative to sliding rail；
The normal direction move survey control unit include the motor mount being connected with ball nut, run through motor, guide sleeve, guide rod,
Normal direction, which is moved, surveys stay wire displacement sensor；It is described through motor be mounted on motor mount on, and motor mount can be through
Motor provides support, and the guide sleeve is connected with motor mount, and the guide rod passes through guide sleeve, and between guide rod and guide sleeve
Using being slidably connected；The guide rod moves through the normal direction of motor and surveys lead screw and be connected respectively with probe rides unit, and through motor
Moving survey lead screw by normal direction can drive probe rides unit to be moved relative to motor mount；
It is described flow direction move survey stay wire displacement sensor one end with flow direction move survey control unit end be fixedly connected, the other end and
The motor mount that normal direction moves survey control unit is connected；
The normal direction moves one end of survey stay wire displacement sensor and normal direction is moved survey unit and is fixedly connected, the other end and probe rides list
Member is connected.
2. measuring the probe rides and movable measuring device of cell wall near-wall region flowing according to claim 1, which is characterized in that institute
It includes the screw mandrel support seat being fixedly connected with sliding rail, the lead screw fixing bracket for providing support for lead screw to state sliding support,
The lead screw fixing bracket is fixedly connected with screw mandrel support seat.
3. measuring the probe rides and movable measuring device of cell wall near-wall region flowing according to claim 1, which is characterized in that institute
Sliding rail is stated by screw or screw rod to be connected with floor in room on test section.
4. special according to any one of claim 1 ~ 3 probe rides and movable measuring device for measuring the flowing of cell wall near-wall region
Sign is that the guide sleeve is mounted on motor mount, and passes through motor mount.
5. measuring the probe rides and movable measuring device of cell wall near-wall region flowing according to claim 4, which is characterized in that institute
It is copper sheathing to state guide sleeve.
6. measuring the probe rides and movable measuring device of cell wall near-wall region flowing according to claim 1, which is characterized in that institute
It states and is provided with several pin holes on motor mount, it further includes fixed pin that the normal direction, which moves and surveys unit, and the motor mount is logical
Fixed pin is crossed with ball nut to be connected.
7. special according to any one of claim 1 ~ 6 probe rides and movable measuring device for measuring the flowing of cell wall near-wall region
Sign is that one end that stay wire displacement sensor is surveyed in the flow direction shifting is installed on the end of ball-screw or sliding rail.
8. special according to any one of claim 1 ~ 7 probe rides and movable measuring device for measuring the flowing of cell wall near-wall region
Sign is that one end that the normal direction moves survey stay wire displacement sensor is connected with motor mount.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810711040.5A CN108593251B (en) | 2018-07-03 | 2018-07-03 | Probe supporting and moving measuring device for measuring flow of wall area near wall of groove |
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|---|---|---|---|
| CN201810711040.5A CN108593251B (en) | 2018-07-03 | 2018-07-03 | Probe supporting and moving measuring device for measuring flow of wall area near wall of groove |
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| CN108593251B CN108593251B (en) | 2023-10-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132522A (en) * | 2019-05-23 | 2019-08-16 | 重庆大学 | Simulation background wind acts on the wind-tunnel of lower wave and mobile downburst coupling |
| CN112067246A (en) * | 2020-09-21 | 2020-12-11 | 中国空气动力研究与发展中心高速空气动力研究所 | Asymmetric convex boundary layer pressure measurement framed bent |
| CN113483983A (en) * | 2021-09-08 | 2021-10-08 | 中国空气动力研究与发展中心高速空气动力研究所 | Hole wall transverse flow characteristic measuring device and measuring method thereof |
| CN110132522B (en) * | 2019-05-23 | 2024-04-19 | 重庆大学 | Wind tunnel for simulating coupling of waves and moving storm under action of background wind |
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| CN110132522A (en) * | 2019-05-23 | 2019-08-16 | 重庆大学 | Simulation background wind acts on the wind-tunnel of lower wave and mobile downburst coupling |
| CN110132522B (en) * | 2019-05-23 | 2024-04-19 | 重庆大学 | Wind tunnel for simulating coupling of waves and moving storm under action of background wind |
| CN112067246A (en) * | 2020-09-21 | 2020-12-11 | 中国空气动力研究与发展中心高速空气动力研究所 | Asymmetric convex boundary layer pressure measurement framed bent |
| CN112067246B (en) * | 2020-09-21 | 2022-11-04 | 中国空气动力研究与发展中心高速空气动力研究所 | Asymmetric convex boundary layer pressure measurement framed bent |
| CN113483983A (en) * | 2021-09-08 | 2021-10-08 | 中国空气动力研究与发展中心高速空气动力研究所 | Hole wall transverse flow characteristic measuring device and measuring method thereof |
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