CN207472811U - A kind of dual openings multitubular bundles refrigeration machine Unsteady Heat Transfer test platform - Google Patents
A kind of dual openings multitubular bundles refrigeration machine Unsteady Heat Transfer test platform Download PDFInfo
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- CN207472811U CN207472811U CN201721434872.4U CN201721434872U CN207472811U CN 207472811 U CN207472811 U CN 207472811U CN 201721434872 U CN201721434872 U CN 201721434872U CN 207472811 U CN207472811 U CN 207472811U
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 29
- 230000009977 dual effect Effects 0.000 title claims abstract description 18
- 238000012360 testing method Methods 0.000 title claims abstract description 16
- 238000012546 transfer Methods 0.000 title claims abstract description 10
- 230000010355 oscillation Effects 0.000 claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 239000000523 sample Substances 0.000 claims description 12
- 210000004907 gland Anatomy 0.000 claims description 7
- 208000002925 dental caries Diseases 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 1
- 230000003068 static effect Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000011160 research Methods 0.000 abstract description 3
- 239000007921 spray Substances 0.000 abstract description 2
- 230000008676 import Effects 0.000 abstract 1
- 238000002474 experimental method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Abstract
A kind of dual openings multitubular bundles refrigeration machine Unsteady Heat Transfer test platform, belongs to pressed gas swell refrigeration technical field.The test platform is restrained static using dual openings, the structure that high pressure nozzle and high temperature nozzle are rotated with fixed angle with the main shaft period, installation for Microsecond grade high-precision fast response transducer provides effective scheme, realize the dynamic acquisition of thermodynamic parameter of fluid and the measurement of wall surface temperature in refrigeration complete machine tube bank, the research influenced for pressure oscillation pipe internal flow mechanism on refrigeration provides most direct experimental data；Consider the influence between channel and import and export the continuity of air-flow, it is identical with existing air wave refrigerating device working condition during operating, state during true gas wave machine production can more accurately be reacted, experimental data is enable more intuitively, reliably to react influence of the gas wave machine internal flow Parameters variation to overall efficiency, more accurately experimental basis is provided to Optimizing Spray Nozzle Structure size and its cooperation.
Description
Technical field
The utility model is related to a kind of dual openings multitubular bundles refrigeration machine Unsteady Heat Transfer test platforms, and it is swollen to belong to pressed gas
Swollen refrigeration technology field.
Background technology
Gas wave refrigeration neck technology is a kind of unsteady pressure wave using in oscillating tube to realize the energy exchange of gas, is reached
To the gas expansion Refrigeration Technique of cold and hot separation.The technology is developed so far, and has had the gas wave refrigeration equipment of many structure types
It comes out, from earliest Character of The Static Gas Wave Refrigerator, rotary air wave refrigerating device finally, pressure-exchange formula wave till now
Refrigeration machine.Pressure-exchange formula air wave refrigerating device is by Dalian University of Technology Hu great Peng et al. proposition earliest, which uses one
Kind of oscillating tube with two ports structure, can improve the isentropic efficiency of gas wave refrigeration, the refrigeration machine also have can with long-play, can
Band liquid, it is simple in structure, versatile the advantages that, the static and rotary air wave refrigerating device of substitution just gradually.
The patent of present this field mainly has：Existing air wave refrigerating device is that dual openings pressure oscillation pipe is rotating part
Part, both ends nozzle are fixed component.This structure is unfavorable for the measurement of the temperature and tube bank wall temperature to fluid in tube bank, leads to difficulty
To meet the research to the internal mechanism of air wave refrigerating device." one kind is based on relative motion to the patent measured applied to inner parameter
Simplification internal combustion wave rotor experimental provision "（CN104458269A）It is the single tube that pressure oscillations restrain static nozzle period rotation
Experiment test platform, the patent do not consider the influence between neighboring oscillation pipe.
Invention content
In order to overcome problems of the prior art, it is non-steady that the utility model provides a kind of dual openings multitubular bundles refrigeration machine
State thermal conductivity test platform.It is static that the test platform should use dual openings to restrain, high pressure nozzle and high temperature nozzle with fixed angle with
The main shaft period rotates, and the regular disengaging tube bank of working gas is made to realize a kind of dual openings multitubular bundles refrigeration whole machine experiment of refrigeration
Platform.Installation for high-precision quick response temperature sensor provides effective scheme, realizes the temperature of fluid in refrigeration complete machine tube bank
The dynamic acquisition of degree and tube bank wall temperature has also considered influence between channel and has imported and exported the continuity of air-flow, during operating
It is identical with existing air wave refrigerating device working condition, state during true gas wave machine production can be more accurately reacted, compensates for mesh
The blank of preceding gas wave refrigeration complete machine internal mechanism and heat conduction problem experimental study provides the most the structure optimization of air wave refrigerating device
Direct experimental data basis.
The technical solution adopted in the utility model is：A kind of dual openings multitubular bundles refrigeration machine Geometry symmetry mode test is flat
Platform, it includes high pressure end housing, high temperature end housing, stator and main shaft, the stator and high pressure end housing, high temperature end housing spiral shell
It tethers and connects；In the stator using clutch shaft bearing, second bearing supports main shaft, in one end of main shaft bearing being fixed on stator
Gland is closed, and bearing gland forms labyrinth seal with labyrinth annular groove and main shaft, and the both sides of main shaft set high pressure nozzle knot respectively
Structure and high temperature nozzle structure, high pressure nozzle structure key are connect, and compressed with back tightening nut with main shaft, and high temperature nozzle structure is tight
The annular convex platform being fixed on main shaft is equipped with by the side of stator；The spindle nose of high temperature end housing is stretched out in motor connection, drives
High pressure nozzle structure and the rotation of high temperature nozzle structural periodicity；The high-pressure side enclosure is equipped with high pressure admission channel, low temperature
Air cavity and low temperature outlet passageway；High pressure admission channel is connected with the high pressure air cavity of spindle nose, and high pressure air cavity is leaned on low temperature air cavity
The labyrinth seal that main shaft coordinates with high pressure end housing separates；Main shaft is equipped in the connecting place with high pressure nozzle structure, main shaft
The high pressure admission opening that high pressure air cavity is connected with the high pressure gas channel of high pressure nozzle structure, the high pressure gas channel of high pressure nozzle structure
It is connect with uniformly distributed pressure oscillation channel circumferential on stator；There are fixed folders with high temperature nozzle structure for the high pressure nozzle structure
Angle, as nozzle arrangements rotate simultaneously, the pressure oscillations channel of stator completes pressure prior to high pressure nozzle fabric connectivity in channel
Power is connected after exchanging with high temperature nozzle structure again, variable angle ranging from 0-270 degree angle, and rotating speed n is less than or equal to 5000r/
min；The main shaft is the axis with two sections of cavitys, in addition to the high pressure air cavity, is additionally provided with high temperature chamber in axis, high temperature chamber connects in axis
The high temperature gas passage of high temperature nozzle structure and the high temperature chamber of high temperature end housing are connect, high temperature chamber and high temperature nozzle in the axis of main shaft
The high temperature gas passage connecting place of structure opens up high temperature air inlet openings, and height is opened up with the high temperature chamber place of communicating of high temperature enclosure in main shaft
Warm outlet opening；Circumferential uniformly distributed pressure oscillation channel on High Temperature Gas channel connecting stator in high temperature nozzle structure；The height
Warm end housing includes room temperature return-air chamber, high temperature chamber, room temperature inlet channel and high temperature outlet passageway, high temperature chamber and room temperature return-air chamber it
Between, be spaced one from by the twice labyrinth seal that main shaft coordinates with high temperature end housing between high temperature chamber and external environment.
The pressure oscillation channel is using the identical sector channel of size, width range 4mm-50mm, altitude range
6mm-300mm, channel spacing plate thickness range 0.2mm-4mm, channel number 8-200, passage length 100-1000mm；In sector
Midline position opens up sensor mounting hole in the axial direction, install for acquire tube fluid instantaneous thermodynamic parameter microsecond
Grade high-precision quick response temperature sensor probe and pressure probe, in the fast response transducer probe mounting holes position that is staggered
Other channel midline positions arrange the patch type thermocouple acquired for wall temperature in the axial direction.
The high pressure nozzle structure, high temperature nozzle structure are respectively provided with the second clump weight, the first clump weight, the matter of clump weight
Amount is identical in quality with offside gas passage.
The effect and benefit of the utility model be：This dual openings multitubular bundles refrigeration machine Unsteady Heat Transfer test platform uses
Dual openings tube bank is static, the structure that high pressure nozzle and high temperature nozzle rotates with fixed angle with the main shaft period, high-precision for Microsecond grade
The installation for spending fast response transducer provides effective scheme, realizes that the dynamic of the thermodynamic parameter of fluid in refrigeration complete machine tube bank is adopted
The measurement of collection and wall surface temperature, the research influenced for pressure oscillation pipe internal flow mechanism on refrigeration provide most direct experiment number
According to；Influence between channel is considered and has imported and exported the continuity of air-flow, work during operating shape with existing air wave refrigerating device
State is identical, can more accurately react state during true gas wave machine production, enables experimental data more intuitive, most reliable anti-
Influence of the gas wave machine internal flow Parameters variation to overall efficiency is answered, it is more accurate that Optimizing Spray Nozzle Structure size and its cooperation are provided
Experimental basis；Simple in structure, rotating member quality is greatly lowered, and operation power consumption significantly reduces.
Description of the drawings
Fig. 1 is a kind of structure diagram of dual openings multitubular bundles refrigeration machine Unsteady Heat Transfer test platform.
Fig. 2 is the A-A sectional views in Fig. 1.
Fig. 3 is the front view of high pressure admission channel.
Fig. 4 is the front view of high temperature outlet passageway.
In figure：1st, high pressure admission channel, 2, high pressure end housing, 3, high pressure nozzle structure, 4, high pressure outlet air opening, 5, wave it is fixed
Son, 6, pressure oscillations channel, 7, main shaft, 8, probe mounting holes, 9, high temperature air inlet openings, 10, high temperature nozzle structure, 11, high temperature
Outlet is open, and 12, high temperature outlet passageway, 13, high temperature chamber, 14, high temperature chamber in axis, 15, high temperature end housing, the 16, first clump weight,
17th, room temperature return-air chamber, 18, room temperature inlet channel, 19, clutch shaft bearing, 20, second bearing, 21, bearing gland, 22, low temperature gas
Chamber, 23, key, 24, low temperature outlet passageway, the 25, second clump weight, 26, back tightening nut, 27, high pressure air cavity.
Specific embodiment
Fig. 1,2,3,4 show a kind of structure chart of dual openings multitubular bundles refrigeration machine Unsteady Heat Transfer test platform.In figure,
This dual openings multitubular bundles refrigeration machine Geometry symmetry mode test platform includes high pressure end housing 2, high temperature end housing 15, stator 5
With main shaft 7.Stator 5 is connected with high pressure end housing 2, high temperature end housing 15.Using clutch shaft bearing 19, the in stator 5
Two bearings, 20 supports main shaft 7, in one end of main shaft 7, the bearing gland 21 being fixed on stator 5 is closed, and bearing gland 21 carries
Labyrinth annular groove forms labyrinth seal with main shaft 7.The both sides of main shaft 7 set high pressure nozzle structure 3 and high temperature nozzle structure 10 respectively,
High pressure nozzle structure 3 is connect with key 23 with main shaft 7, and is compressed with back tightening nut 26, and high temperature nozzle structure 10 is in close proximity to stator 5
Side is equipped with the annular convex platform 10a being fixed on main shaft 7.7 end of main shaft of high temperature end housing 15 is stretched out in motor connection, is driven high
Press 10 Periodic Rotating of nozzle arrangements 3 and high temperature nozzle structure；
High pressure end housing 2 is internally provided with high pressure admission channel 1, low temperature air cavity 22 and low temperature outlet passageway 24.High pressure admission
Channel 1 is connected with the high pressure air cavity 27 of 7 end of main shaft, and high pressure air cavity 27 is matched with low temperature air cavity 22 by main shaft 7 with high pressure end housing 2
The labyrinth seal of conjunction separates.Main shaft 7 is equipped with high pressure air cavity 27 and high pressure in the connecting place with high pressure nozzle structure 3, main shaft 7
The high pressure admission opening 4 that the high pressure gas channel of nozzle arrangements 3 is connected, high pressure gas channel and the ring on stator 5 of high pressure nozzle structure 3
It is connected to uniformly distributed pressure oscillation channel 6.
There are fixed angles with high temperature nozzle structure 10 for high pressure nozzle structure 3, fixed as nozzle arrangements rotate simultaneously
Son 5 pressure oscillations channel 6 connected prior to high pressure nozzle structure 3, in channel complete pressure-exchange after again with high temperature nozzle knot
Structure 10 is connected, variable angle ranging from 0-270 degree angle, and rotating speed n is less than or equal to 5000r/min.
Main shaft 7 is the axis with two sections of cavitys, in addition to high pressure air cavity 27, is additionally provided with high temperature chamber 14 in axis.High temperature chamber in axis
The high temperature chamber 13 of the high temperature gas passage and high temperature end housing 15 of 14 connection high temperature nozzle structures 10, the high temperature in the axis of main shaft 7
Chamber 14 and the high temperature gas passage connecting place of high temperature nozzle structure 10 open up high temperature air inlet openings 9, in main shaft 7 and high temperature enclosure 15
13 place of communicating of high temperature chamber open up high temperature outlet opening 11.Ring on High Temperature Gas channel connecting stator 5 in high temperature nozzle structure 10
To uniformly distributed pressure oscillation channel 6.
High temperature end housing 15 includes room temperature return-air chamber 17, high temperature chamber 13, room temperature inlet channel 18 and high temperature outlet passageway 12,
Coordinate between high temperature chamber 13 and room temperature return-air chamber 17, between high temperature chamber 13 and external environment by main shaft 7 with high temperature end housing 15
Twice labyrinth seal is spaced one from.
Pressure oscillation channel 6 is using the identical sector channel of size, width range 4mm-50mm, altitude range 6mm-
300mm, channel spacing plate thickness range 0.2mm-4mm, channel number 8-200, passage length 100-1000mm；In fan-shaped center line
Position opens up sensor mounting hole in the axial direction, installs high for acquiring the Microsecond grade of the instantaneous thermodynamic parameter of tube fluid
Precision quick response temperature sensor probe and pressure probe, in other for the fast response transducer probe mounting holes position that is staggered
Channel midline position arranges the patch type thermocouple acquired for wall temperature in the axial direction.
High pressure nozzle structure 3, high temperature nozzle structure 10 are respectively provided with the second clump weight 25, the first clump weight 16, clump weight
Quality it is identical in quality with offside gas passage, form use with influence fluid flowing minimize template, cobblestone
Shape, taper or sieve type.
Using above-mentioned technical solution, pressure oscillations tube bank is stationary parts, and main shaft is connect with motor, drives inlet, outlet
Component Periodic Rotating makes gas with various periodically pass in and out pressure oscillation channel.Since the rotating speed of rotatable parts is solely dependent upon
Can gas periodically pass in and out oscillation channel, so rotating speed requirement is relatively low, n is less than or equal to 5000r/min.
It is illustrated below with the cooling flow of a pressure oscillations channel：High-pressure channel is passed through high pressure gas, high pressure gas
Body enters pressure oscillations channel by high pressure air cavity, high pressure spout, forms original atmosphere gas in shock wave, with channel and carries out pressure
With the exchange of temperature；There are certain angles with high temperature spout for high pressure spout, and with the rotation of rotating member, high temperature spout with penetrating before
The pressure oscillations channel for entering high pressure gas is connected, and the high-temperature gas after energy exchange is made to be discharged out of channel；With revolving part after
Continuous rotation, pressure oscillation channel are detached from into outlet component, and both sides are both exposed to room temperature return-air chamber and low temperature cavity, and room temperature return-air leads to
Enter room temperature inlet channel, under the promotion of gas at normal temperature, in cryogenic gas, that is, product discharge oscillation channel to low temperature cavity.Due to pressure
Power concussion port annular uniformly form tube bank, with the periodically continued rotation of rotating member, gas with various be back to back pressure shake
Tube bank is swung, therefore the flowing of the inlet and outlet gas of equipment is continuous and uniform.
High-precision quick response temperature sensor probe is filled in the probe mounting holes of wave stator, for acquiring tube fluid
Transient temperature.Thermocouple patch is disposed in wave rotor unit with grooves in outer wall, for acquiring wall temperature.
The position of key that high pressure spout and the angle of high temperature spout are connected by high pressure admission component with main shaft controls, angle
Alterable ranging from 0-270 degree angle.
Claims (3)
1. a kind of dual openings multitubular bundles refrigeration machine Unsteady Heat Transfer test platform, it includes high pressure end housing（2）, high temperature end housing
（15）, stator（5）And main shaft（7）, it is characterised in that：The stator（5）With high pressure end housing（2）, high temperature end housing（15）With
It is bolted；In stator（5）It is middle to use clutch shaft bearing（19）, second bearing（20）Supports main shaft（7）, in main shaft（7）One end
With being fixed on stator（5）On bearing gland（21）Closing, bearing gland（21）With labyrinth annular groove and main shaft（7）Form labyrinth
Sealing, main shaft（7）Both sides high pressure nozzle structure is set respectively（3）With high temperature nozzle structure（10）, high pressure nozzle structure（3）With
Key（23）With main shaft（7）Connection, and use back tightening nut（26）It compresses, high temperature nozzle structure（10）In close proximity to stator（5）Side
Equipped with being fixed on main shaft（7）On annular convex platform（10a）；High temperature end housing is stretched out in motor connection（15）Main shaft（7）End, band
Dynamic high pressure nozzle structure（3）With high temperature nozzle structure（10）Periodic Rotating；The high pressure end housing（2）Be internally provided with high pressure into
Gas channel（1）, low temperature air cavity（22）With low temperature outlet passageway（24）；High pressure admission channel（1）With main shaft（7）The high pressure gas of end
Chamber（27）It is connected, high pressure air cavity（27）With low temperature air cavity（22）By main shaft（7）With high pressure end housing（2）The labyrinth seal of cooperation point
It separates；Main shaft（7）With high pressure nozzle structure（3）Connecting place, main shaft（7）It is equipped with high pressure air cavity（27）With high pressure nozzle knot
Structure（3）High pressure gas channel be connected high pressure admission opening（4）, high pressure nozzle structure（3）High pressure gas channel and stator（5）On
Circumferential uniformly distributed pressure oscillation channel（6）Connection；The high pressure nozzle structure（3）With high temperature nozzle structure（10）There are fixed
Angle, as nozzle arrangements rotate simultaneously, stator（5）Pressure oscillations channel（6）Prior to high pressure nozzle structure（3）Connection,
Complete in channel after pressure-exchange again with high temperature nozzle structure（10）It is connected, variable angle ranging from 0-270 degree angle, rotating speed n is small
In or equal to 5000r/min；The main shaft（7）To carry the axis of two sections of cavitys, except the high pressure air cavity（27）Outside, it is additionally provided with axis
Interior high temperature chamber（14）, high temperature chamber in axis（14）Connect high temperature nozzle structure（10）High temperature gas passage and high temperature end housing（15）
High temperature chamber（13）, in main shaft（7）Axis in high temperature chamber（14）With high temperature nozzle structure（10）High temperature gas passage connecting place
Open up high temperature air inlet openings（9）, in main shaft（7）With high temperature enclosure（15）High temperature chamber（13）The place of communicating opens up high temperature outlet opening
（11）；High temperature nozzle structure（10）In High Temperature Gas channel connecting stator（5）The uniformly distributed pressure oscillation channel of upper circumferential direction（6）；Institute
State high temperature end housing（15）Including room temperature return-air chamber（17）, high temperature chamber（13）, room temperature inlet channel（18）With high temperature outlet passageway
（12）, high temperature chamber（13）With room temperature return-air chamber（17）Between, high temperature chamber（13）Main shaft is leaned between external environment（7）With temperature end
Shell（15）The twice labyrinth seal of cooperation is spaced one from.
2. a kind of dual openings multitubular bundles refrigeration machine Unsteady Heat Transfer test platform according to claim 1, it is characterised in that：
The pressure oscillation channel（6）Using the identical sector channel of size, width range 4mm-50mm, altitude range 6mm-
300mm, channel spacing plate thickness range 0.2mm-4mm, channel number 8-200, passage length 100-1000mm；In fan-shaped center line
Position opens up sensor mounting hole in the axial direction, installs high for acquiring the Microsecond grade of the instantaneous thermodynamic parameter of tube fluid
Precision quick response temperature sensor probe and pressure probe, in other for the fast response transducer probe mounting holes position that is staggered
Channel midline position arranges the patch type thermocouple acquired for wall temperature in the axial direction.
3. a kind of dual openings multitubular bundles refrigeration machine Unsteady Heat Transfer test platform according to claim 1, it is characterised in that：
The high pressure nozzle structure（3）, high temperature nozzle structure（10）It is respectively provided with the second clump weight（25）, the first clump weight（16）, match
The quality of pouring weight is identical in quality with offside gas passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721434872.4U CN207472811U (en) | 2017-11-01 | 2017-11-01 | A kind of dual openings multitubular bundles refrigeration machine Unsteady Heat Transfer test platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721434872.4U CN207472811U (en) | 2017-11-01 | 2017-11-01 | A kind of dual openings multitubular bundles refrigeration machine Unsteady Heat Transfer test platform |
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| Publication Number | Publication Date |
|---|---|
| CN207472811U true CN207472811U (en) | 2018-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721434872.4U Withdrawn - After Issue CN207472811U (en) | 2017-11-01 | 2017-11-01 | A kind of dual openings multitubular bundles refrigeration machine Unsteady Heat Transfer test platform |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917928A (en) * | 2017-11-01 | 2018-04-17 | 大连理工大学 | A kind of dual openings multitubular bundles refrigeration machine Unsteady Heat Transfer test platform |
| CN112253556A (en) * | 2020-06-30 | 2021-01-22 | 大连理工大学 | Positive displacement expansion driving phase change wave rotor supercharger |
| CN114112471A (en) * | 2021-08-23 | 2022-03-01 | 大连理工大学 | Non-contact diagnosis platform for performance test of gas wave oscillation tube |
-
2017
- 2017-11-01 CN CN201721434872.4U patent/CN207472811U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917928A (en) * | 2017-11-01 | 2018-04-17 | 大连理工大学 | A kind of dual openings multitubular bundles refrigeration machine Unsteady Heat Transfer test platform |
| CN107917928B (en) * | 2017-11-01 | 2024-02-02 | 大连理工大学 | Unsteady heat conduction test platform of double-opening multi-tube-bundle refrigerator |
| CN112253556A (en) * | 2020-06-30 | 2021-01-22 | 大连理工大学 | Positive displacement expansion driving phase change wave rotor supercharger |
| CN112253556B (en) * | 2020-06-30 | 2021-08-24 | 大连理工大学 | Positive displacement expansion driving phase change wave rotor supercharger |
| CN114112471A (en) * | 2021-08-23 | 2022-03-01 | 大连理工大学 | Non-contact diagnosis platform for performance test of gas wave oscillation tube |
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