CN106959201A - Continuous high-speed wind-tunnel liquid nitrogen cooling supplies air distribution system - Google Patents
Continuous high-speed wind-tunnel liquid nitrogen cooling supplies air distribution system Download PDFInfo
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- CN106959201A CN106959201A CN201710353846.7A CN201710353846A CN106959201A CN 106959201 A CN106959201 A CN 106959201A CN 201710353846 A CN201710353846 A CN 201710353846A CN 106959201 A CN106959201 A CN 106959201A
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The present invention proposes that a kind of continuous high-speed wind-tunnel liquid nitrogen cooling supplies air distribution system, including liquid nitrogen cryogenics pump, vaporizer, gas cylinder group, air distribution system, connecting pipe and mating valve；Liquid nitrogen in storage tank is delivered to vaporizer by liquid nitrogen cryogenics pump, and liquid nitrogen evaporates supercharging in vaporizer, then into gas cylinder group；The gas cylinder component is that gas control gas cylinders group pushes away gas cylinders group with crowded；The gas cylinder group total measurement (volume) meets gas control gas, storage tank and is pressurized and squeezes in advance the tolerance requirement for pushing away gas needs；Gas cylinder group connects air distribution system, and air distribution system carries out pressure setting to amounting to four road gas, forms four way outlets；Wherein gas control gas cylinders group corresponds to air distribution system two-way outlet：Low voltage control gas port and high voltage control gas port；Squeeze and push away gas cylinders group correspondence air distribution system two-way outlet：Pre- supercharging gas port pushes away air supply opening with crowded.The present invention is matched well with the overall cooling system of wind-tunnel, and technical support is provided to build up China's first set continuous high-speed wind-tunnel cooling system.
Description
Technical field
Driving and the design field of control system are transported the present invention relates to cryogenic liquid, is specifically a kind of high for continous way
The liquid nitrogen cooling of fast wind-tunnel supplies air distribution system.
Background technology
Reynolds number is the important similar parameter of wind tunnel experiment simulated flight device practical flying ability.In theory,
Wind tunnel experiment is simulated real state of flight completely, wind tunnel experiment and the Reynolds number of practical flight is kept one
Cause.However, due to being limited by factors such as moulded dimension, wind-tunnel power-equipment, energy resource systems, current wind tunnel experiment Reynolds
Number is also difficult to reach actual flight Reynolds number.Development of the high Reynola number wind tunnel to China's Aviation Industry and science and techniques of defence is developed to have
There are its own strategic significance and engineering application value.
Continuous high-speed wind-tunnel is that the reverse-flow type high-speed air being continuously long-running driven by axial flow compressor is moved
Mechanics experiment platform, its flow field quality and conventional efficient are far above conventional intermittent wind tunnel.But due to continuous high-speed wind-tunnel by
Heavy-duty motor drives, and is limited by energy resource system, and its experimental section Reynolds number still has certain gap with practical flight Reynolds number, no
The demand of fighter plane and large high-speed civil aircraft model experiment can be met well.Reynolds number is by fluid density, temperature, speed and mould
Molded dimension determines that in the case of experimental section size with fluid media (medium) not malleable, cooling can increase fluid density, reduce viscosity
Coefficient, is that a kind of improve tests Reynolds number effective way.China still belongs to blank in terms of low temperature continuous high-speed wind-tunnel at present, because
This, the liquid nitrogen cooling system and its associated low temperature experimental technique developed suitable for continuous high-speed wind-tunnel are created to China's Wind Tunnel Technique
It is newly significant with weapons SoS.
Continuous high-speed wind-tunnel cooling system by liquid nitrogen storage device, for air distribution system, measuring system and control system and
The big subsystem of fluid-N2 spraying device five is constituted, wherein being the core component of overall cooling system for air distribution system, for gas
Control gas pushes away preparation, storage, pressure regulation and the supply of gas with squeezing, for air-operated solenoid valve and liquid nitrogen storage tank provides stable control source of the gas with
Pushing force is squeezed, the driving source that liquid nitrogen sprays into wind-tunnel is formed.
Technically, squeeze and push away the driving source that mode or liquid nitrogen pump supercharging mode can be sprayed into as liquid nitrogen.Squeeze the side of pushing away
The characteristics of formula, is in response to soon, and can provide pressed before stable spray, it is not necessary to larger driving power, be suitable for short time gap work
Make.Because liquid nitrogen flow is larger, liquid nitrogen container provide for oneself evaporator evaporation capacity can not meet liquid nitrogen squeeze push away tolerance demand, it is necessary to be
Deposit squeezes and pushes away gas in advance before system operation；Squeeze the mode that pushes away and drive and require that liquid nitrogen storage tank and pipe-line system have higher work pressure
Power.Liquid nitrogen pump mode of movement is adapted to long time continuous working, but main problem is in response to relatively slowly, and needs larger driving work(
Rate.Therefore, according to the design feature and operational mode of continuous high-speed wind-tunnel, the scheme of transporting is pushed away, it is necessary to develop a set of for squeezing
Air distribution system is supplied suitable for the liquid nitrogen of continuous high-speed wind-tunnel, is provided by gas cylinder group to liquid nitrogen storage tank and squeezes pushing force,
Under pressure differential between storage tank and nozzle, liquid nitrogen is sent into wind-tunnel.
The content of the invention
For the design feature and operational mode of continuous high-speed wind-tunnel, the present invention is pushed away by setting up liquid nitrogen straying quatity with squeezing
The matching relationship of atmospheric pressure and flow, proposes that a set of liquid nitrogen for continuous high-speed wind-tunnel supplies air distribution system, solves elevated pressure nitrogen
Gas prepare be pressurized in advance with storage, liquid nitrogen storage tank, gas control gas with squeeze push away atmospheric pressure, flow control technical problem, formed it is stable, can
The Valve controlling source of the gas leaned on and liquid nitrogen driving source.
The technical scheme is that：
A kind of continuous high-speed wind-tunnel liquid nitrogen cooling supplies air distribution system, it is characterised in that：Including liquid nitrogen cryogenics pump, vapour
Change device, gas cylinder group, air distribution system, connecting pipe and mating valve；
Liquid nitrogen in storage tank is delivered to vaporizer by liquid nitrogen cryogenics pump, and liquid nitrogen evaporates supercharging in vaporizer, then entered
Gas cylinder group；The gas cylinder component is that gas control gas cylinders group pushes away gas cylinders group with crowded；The gas cylinder group total measurement (volume) is met
Gas control gas, storage tank are pressurized and squeezed in advance the tolerance requirement for pushing away gas needs；Gas cylinder group connects air distribution system, and air distribution system is to amounting to
Four road gas carry out pressure setting, form four way outlets；Wherein gas control gas cylinders group corresponds to air distribution system two-way outlet：Low voltage control gas
Mouth and high voltage control gas port；Squeeze and push away gas cylinders group correspondence air distribution system two-way outlet：Pre- supercharging gas port pushes away air supply opening with crowded.
A kind of further preferred scheme, continuous high-speed wind-tunnel liquid nitrogen cooling supplies air distribution system, it is characterised in that：
Liquid nitrogen cryogenics pumpage is 250L/h, and outlet pressure is 15MPa；Vaporizer evaporation capacity is 200Nm3/ h, operating pressure is
15MPa, outlet temperature grade：≥5℃；Gas cylinder group pressure reaches after target pressure value 15MPa that liquid nitrogen cryogenics pump stops fortune
OK, nitrogen preparation work is completed.
A kind of further preferred scheme, continuous high-speed wind-tunnel liquid nitrogen cooling supplies air distribution system, it is characterised in that：
The gas cylinder that gas cylinder group is arranged by 27 identical layer stack formulas is constituted, and the volume of single gas cylinder is 0.12m3, always
Volume is 3.24m3, operating pressure is 15MPa；Wherein gas control gas cylinders group is made up of 2 gas cylinders, and volume is 0.24m3, for many
Individual pneumatic operated valve cylinder supply, realizes the fast opening and closing of pneumatic operated valve valve, it is corresponding conflux after outlet house steward latus rectum be 15mm；Squeeze
Push away gas cylinders group to be made up of 25 gas cylinders, volume is 3m3, liquid nitrogen is pushed away for being pressurized and squeezing in advance to liquid nitrogen storage tank, corresponding outlet is total
Pipe latus rectum is 25mm.
A kind of further preferred scheme, continuous high-speed wind-tunnel liquid nitrogen cooling supplies air distribution system, it is characterised in that：
The pressure configuration of air distribution system low voltage control gas port is 1MPa, and the pressure configuration of high voltage control gas port is 5MPa, and gas port is pressurized in advance
Pressure configuration be 2MPa, squeeze push away air supply opening pressure configuration be 2.7MPa.
Beneficial effect
The confession air distribution system nitrogen demand and its operating pressure that this programme is proposed meet continuous high-speed wind-tunnel cooling system
The use requirement of system, high pressure nitrogen preparation facilities is stable, and liquid nitrogen cryogenics pumpage, vaporizer evaporation capacity and outlet pressure reach
To design requirement；Gas cylinder group is reasonable in design, and total measurement (volume) meets storage tank with operating pressure, and supercharging will with the crowded push technology of liquid nitrogen in advance
Ask；Air distribution system is reasonable in design, operated pneumatic valve working stability, and pressure regulation is accurate.Integrally cool with wind-tunnel for air distribution system and be
System matching is good.The technical program provides technical support to build up China's first set continuous high-speed wind-tunnel cooling system.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Liquid nitrogen demand volume under the continuous high-speed wind-tunnel cooling system of accompanying drawing 1 difference inlet flow conditions；
Accompanying drawing 2 is that continuous high-speed wind-tunnel liquid nitrogen cooling supplies air distribution system structure chart；
1- liquid nitrogen cryogenics pumps, 2- vaporizers, 3- gas cylinder groups, 4- air distribution systems, 5- connecting pipes.
Accompanying drawing 3 is high pressure nitrogen preparation principle figure；
1- liquid nitrogen cryogenics pumps, 2- vaporizers, 6- pressure gauges.
Accompanying drawing 4 is gas cylinder group structure chart；
7- gas control gas cylinders groups, 8- is squeezed and is pushed away gas cylinders group.
Accompanying drawing 5 is air distribution system fundamental diagram；
9- pneumatic operated valves, 10- pressure transmitters, 11- pressure gauges, 12- pressure-reducing valves, 13- stop valves, 14-3m3Gas cylinder group
Gas circuit, 15- 0.24m3Gas cylinder group gas circuit, 16- low-pressure pneumatic valve gas circuits, 17- high-pressure air operated valve gas circuits, 18- supercharging gas
Road, 19- is squeezed and is pushed away gas circuit.
Accompanying drawing 6 is NF-6 continuous high-speed wind-tunnel cooling systems；
20- wind tunnel noumenons, 21 liquid nitrogen storage devices, 22- supplies air distribution system, 23- control systems, 24- fluid-N2 spraying devices.
Accompanying drawing 7 supplies air distribution system test result；
Accompanying drawing 8 is the Parameters variation during hydrojet nitrogen pull-down test；
Accompanying drawing 9 is the stagnation temperature change during pull-down test.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise " are, based on orientation shown in the drawings or position relationship, to be for only for ease of
The description present invention and simplified description, rather than indicate or imply that the device or element of meaning must have specific orientation, Yi Te
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.
The present embodiment is a set of confession air distribution system for continuous high-speed wind-tunnel cooling system, for being carried for cooling system
For stable, reliable Valve controlling source of the gas and liquid nitrogen driving source.System is by liquid nitrogen cryogenics pump, vaporizer, gas cylinder group, distribution
System, connecting pipe and mating valve composition.
NF-6 wind-tunnel are China's First continuous high-speed wind-tunnel, be also domestic currently the only one put into operation it is continuous
Formula high-speed wind tunnel.The overall performance of the wind-tunnel reaches domestically leading, international most advanced level.In order to verify the feasibility of this invention
And beneficial effect, using NF-6 continuous high-speeds wind-tunnel as implementing platform, overall plan and main skill for wind-tunnel cooling system
Art requirement, the development and design confession air distribution system of NF-6 continuous high-speed wind-tunnel cooling systems, and carried out operation debugging.
NF-6 continuous high-speed wind-tunnel cooling systems are by wind tunnel noumenon 20, liquid nitrogen storage device 21, for the and of air distribution system 22
Control system 23 and fluid-N2 spraying device 24 are constituted, as shown in Figure 6.Wherein liquid nitrogen storage device undertake low temperature liquid nitrogen irrigation,
From supercharging, overpressure protection, discharge of residual night task.It is used to solve high pressure nitrogen preparation for air distribution system and storage, liquid nitrogen storage tank is pre-
Supercharging, gas control gas push away the problem of atmospheric pressure, flow are controlled with squeezing, and are deposited with providing stable, reliable liquid nitrogen for wind-tunnel cooling system
Storage and drive condition.Control system is used for the overall control of each parameter in wind tunnel operation.
Before setting up for air distribution system, the nitrogen demand for air distribution system need to be calculated, so that it is determined that high pressure
The evaporation capacity of the volume of gas cylinders group, the discharge capacity of liquid nitrogen booster pump and vaporizer.Fig. 1 gives continuous high-speed wind-tunnel difference to flow
Under the conditions of liquid nitrogen demand volume.As can be seen that when Mach number is less than 0.3, liquid nitrogen flow is all not more than 2kg/s, stable work
Maximum liquid nitrogen flow demand under condition is 16kg/s.The crowded flow rate calculation for pushing away gas is shown in Table 1, in the crowded pushing force (3MPa) of maximum and most
(16kg/s), which is squeezed, under big liquid nitrogen flow pushes away the maximum mass flow of gas for 1kg/s.According to design squeeze pushing force, run time and
Pre- supercharging air consumption, the tolerance that determining gas control gas needs is 0.24m3, storage tank be pressurized and squeeze in advance push away gas needs tolerance be 3.0m3,
High pressure nitrogen aggregate demand is 3.24m3, operating pressure is 16.5MPa.
Table 1 squeezes and pushes away throughput result of calculation
| Liquid nitrogen flow, kg/s | 0.50 | 1.00 | 2 | 3 | 5.00 | 10.00 | 15.00 | 20.00 |
| Squeeze and push away gas temperature, K | 233.00 | 233.00 | 233.00 | 233.00 | 233.00 | 233.00 | 233.00 | 233.00 |
| Squeeze and push away atmospheric pressure, MPa | 3.00 | 3.00 | 3.00 | 3.00 | 3.00 | 3.00 | 3.00 | 3.00 |
| Squeeze and push away air tightness, kg/m3 | 43.35 | 43.35 | 43.35 | 43.35 | 43.35 | 43.35 | 43.35 | 43.35 |
| Volume flow, m3/s | 0.0006 | 0.0012 | 0.0025 | 0.0037 | 0.0062 | 0.0124 | 0.0186 | 0.0248 |
| Mass flow, kg/s | 0.03 | 0.05 | 0.11 | 0.16 | 0.27 | 0.54 | 0.80 | 1.07 |
As shown in Fig. 2 continuous high-speed wind-tunnel liquid nitrogen cooling supplies air distribution system by liquid nitrogen cryogenics pump 1, vaporizer 2, high pressure
Gas cylinders group 3, air distribution system 4, connecting pipe 5 and mating valve composition, system are prepared by high pressure nitrogen, stored and loine pressure
Regulation realizes that storage tank is pressurized in advance, the purpose for pushing away and transporting is squeezed in air-operated solenoid valve driving and liquid nitrogen.
High pressure nitrogen is prepared to coordinate by liquid nitrogen cryogenics pump and vaporizer and completed.As shown in figure 3, first by liquid nitrogen cryogenics pump
Liquid nitrogen in storage tank is delivered to vaporizer 2 by 1, and then liquid nitrogen evaporates supercharging in vaporizer, finally enters high-pressure nitrogen bottle group.
Wherein liquid nitrogen cryogenics pumpage is 250L/h, and outlet pressure is 15MPa；Vaporizer evaporation capacity is 200Nm3/ h is (within 2.5 hours
Gas cylinder group can be full of), operating pressure is 15MPa, outlet temperature grade：≥5℃.Gas cylinder group pressure reaches target
After pressure value (15MPa), liquid nitrogen cryogenics pump is out of service, and nitrogen preparation work is completed.
The gas cylinder that gas cylinder group is arranged by 27 identical layer stack formulas is constituted, and the volume of single gas cylinder is
0.12m3, total measurement (volume) is 3.24m3, operating pressure is 15MPa.Gas cylinder group arrangement is as shown in figure 4, wherein gas control gas cylinder
Group 1 is made up of 2 gas cylinders, and volume is 0.24m3, for being supplied to multiple pneumatic operated valve cylinders, to realize the fast opening and closing of valve,
It is corresponding conflux after outlet house steward latus rectum be 15mm；Squeeze and push away gas cylinders group and be made up of 25 gas cylinders, volume is 3m3, for liquid
Nitrogen storage tank, which is pressurized and squeezed in advance, pushes away liquid nitrogen, and corresponding outlet house steward latus rectum is 25mm.
The function of air distribution system is to carry out pressure setting using the road gas of pressure regulator valve Dui Zhe tetra-, and its operation principle is as shown in Figure 5.
The outlet of air distribution system is divided into four tunnels, and the pressure configuration of low voltage control gas port is 1MPa, and the pressure configuration of high voltage control gas port is
5MPa, the pressure configuration of pre- supercharging gas port is 2MPa, squeezes and pushes away the pressure configuration of air supply opening for 2.7MPa.
For air distribution system testing results：
Fig. 7 gives the debugging result for air distribution system, it is known that：
1) in whole process of the test, liquid nitrogen is in liberal supply, and the crowded source pressure that pushes away is always held at more than 2Mpa, shows that liquid nitrogen is deposited
The ability of reserves and driving source of the gas meets system requirements；
2) air-operated solenoid valve is active in one's movements, and pre- supercharging device is working properly, squeezes pushing force control steadily, air distribution system reaches
Design requirement；
3) to transport pipeline reasonable in design for liquid nitrogen, loses small along stroke pressure, pressure reaches 1.2Mpa before spray, and amount of liquid nitrogen spray is measured
To effective guarantee；
4) keying of magnetic valve can cause to extrude existing small bounce before spraying, and the pressure oscillation time continues 2~3 seconds, but quickly
Recover steady, cooling-down effect will not be made a significant impact.
Wind-tunnel cooling system overall operation is tested：
After the completion of other subsystems are built, overall operation and the test of wind-tunnel cooling system are carried out, wind-tunnel stagnation pressure is used
Closed-loop control, arrives stream wind speed is set as M=0.5.Fig. 8 gives stagnation temperature, stagnation pressure and Mach number during its whole pull-down test
Change curve, Fig. 9 gives the situation of change of wind-tunnel stable section stagnation temperature, and test result shows：
1) matched for air distribution system with other subsystems well, wind-tunnel cooling system is working properly, stable.
2) cooling system obtains compatible very well with the former TT＆C system of wind-tunnel, and wind-tunnel stagnation pressure and Mach number control is not by obvious shadow
Ring,
3) average value of 9 stagnation temperature measuring points of test section reaches -20 DEG C, and meets
4) average value of test section Ma numbers reaches 0.5, and Mach number deviation is | Δ Ma |≤0.003, and meet σMa≤0.003；
5) average value of stable section stagnation pressure is 1.022bar, and its amplitude of variation is met
6) effective time of wind-tunnel cooling operation, more than 90s, reaches design requirement.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art is not departing from the principle and objective of the present invention
In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.
Claims (4)
1. a kind of continuous high-speed wind-tunnel liquid nitrogen cooling supplies air distribution system, it is characterised in that：Including liquid nitrogen cryogenics pump, vaporizer,
Gas cylinder group, air distribution system, connecting pipe and mating valve；
Liquid nitrogen in storage tank is delivered to vaporizer by liquid nitrogen cryogenics pump, and liquid nitrogen evaporates supercharging in vaporizer, then into high pressure
Gas cylinders group；The gas cylinder component is that gas control gas cylinders group pushes away gas cylinders group with crowded；The gas cylinder group total measurement (volume) meets gas control
Gas, storage tank are pressurized and squeezed in advance the tolerance requirement for pushing away gas needs；Gas cylinder group connects air distribution system, and air distribution system is to amounting to four tunnels
Gas carries out pressure setting, forms four way outlets；Wherein gas control gas cylinders group corresponds to air distribution system two-way outlet：Low voltage control gas port and
High voltage control gas port；Squeeze and push away gas cylinders group correspondence air distribution system two-way outlet：Pre- supercharging gas port pushes away air supply opening with crowded.
2. a kind of continuous high-speed wind-tunnel liquid nitrogen cooling supplies air distribution system according to claim 1, it is characterised in that：Liquid nitrogen is low
Warm pumpage is 250L/h, and outlet pressure is 15MPa；Vaporizer evaporation capacity is 200Nm3/ h, operating pressure is 15MPa, outlet
Temperature grade：≥5℃；Gas cylinder group pressure reaches after target pressure value 15MPa that liquid nitrogen cryogenics pump is out of service, nitrogen system
Standby work is completed.
3. a kind of continuous high-speed wind-tunnel liquid nitrogen cooling supplies air distribution system according to claim 1, it is characterised in that：High pressure gas
The gas cylinder that bottle group is arranged by 27 identical layer stack formulas is constituted, and the volume of single gas cylinder is 0.12m3, total measurement (volume) is
3.24m3, operating pressure is 15MPa；Wherein gas control gas cylinders group is made up of 2 gas cylinders, and volume is 0.24m3, for multiple pneumatic
Valve cylinder is supplied, and realizes the fast opening and closing of pneumatic operated valve valve, it is corresponding conflux after outlet house steward latus rectum be 15mm；Squeeze and push away gas cylinder
Group is made up of 25 gas cylinders, and volume is 3m3, liquid nitrogen, corresponding outlet house steward latus rectum are pushed away for being pressurized and squeezing in advance to liquid nitrogen storage tank
For 25mm.
4. a kind of continuous high-speed wind-tunnel liquid nitrogen cooling supplies air distribution system according to claim 1, it is characterised in that：Distribution system
The pressure configuration of system low voltage control gas port is 1MPa, and the pressure configuration of high voltage control gas port is 5MPa, the pressure of pre- supercharging gas port
2MPa is configured to, squeezes and pushes away the pressure configuration of air supply opening for 2.7MPa.
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| CN201710353846.7A CN106959201B (en) | 2017-05-18 | 2017-05-18 | Continuous high-speed wind tunnel liquid nitrogen cooling gas supply and distribution system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112069462A (en) * | 2020-08-28 | 2020-12-11 | 中国空气动力研究与发展中心计算空气动力研究所 | Large icing wind tunnel high-pressure air resource consumption calculation method |
| CN114608785A (en) * | 2022-05-10 | 2022-06-10 | 中国空气动力研究与发展中心高速空气动力研究所 | Method for obtaining static pressure matching accuracy of uniform area of large-range supersonic jet flow field |
| CN116088593A (en) * | 2023-04-12 | 2023-05-09 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Low-temperature wind tunnel liquid nitrogen jet bent frame flow control method, device and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083587A (en) * | 1993-09-20 | 1994-03-09 | 中国科学院力学研究所 | The mat heat separator reduces the cryonetic wind tunnel of stagnation temperature |
| RU2526505C1 (en) * | 2013-04-04 | 2014-08-20 | Российская Федерация, от имени которой выступает Министерство промышленности и торговли Российской Федерации (Минпромторг России) | Method of gas flow creation in aerodynamic tunnel and aerodynamic tunnel |
-
2017
- 2017-05-18 CN CN201710353846.7A patent/CN106959201B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1083587A (en) * | 1993-09-20 | 1994-03-09 | 中国科学院力学研究所 | The mat heat separator reduces the cryonetic wind tunnel of stagnation temperature |
| RU2526505C1 (en) * | 2013-04-04 | 2014-08-20 | Российская Федерация, от имени которой выступает Министерство промышленности и торговли Российской Федерации (Минпромторг России) | Method of gas flow creation in aerodynamic tunnel and aerodynamic tunnel |
Non-Patent Citations (2)
| Title |
|---|
| 俞鸿儒: "产生风洞低温试验气流的新途径", 《流体力学实验与测量》 * |
| 赵保平等: "大型热环境试验技术的最新进展", 《装备环境工程》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112069462A (en) * | 2020-08-28 | 2020-12-11 | 中国空气动力研究与发展中心计算空气动力研究所 | Large icing wind tunnel high-pressure air resource consumption calculation method |
| CN112069462B (en) * | 2020-08-28 | 2022-05-31 | 中国空气动力研究与发展中心计算空气动力研究所 | Large icing wind tunnel high-pressure air resource consumption calculation method |
| CN114608785A (en) * | 2022-05-10 | 2022-06-10 | 中国空气动力研究与发展中心高速空气动力研究所 | Method for obtaining static pressure matching accuracy of uniform area of large-range supersonic jet flow field |
| CN116088593A (en) * | 2023-04-12 | 2023-05-09 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Low-temperature wind tunnel liquid nitrogen jet bent frame flow control method, device and storage medium |
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| CN106959201B (en) | 2023-02-28 |
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