CN101852672B - High-speed train-tunnel aerodynamic characteristic movable model experiment system - Google Patents
High-speed train-tunnel aerodynamic characteristic movable model experiment system Download PDFInfo
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- CN101852672B CN101852672B CN2010101883174A CN201010188317A CN101852672B CN 101852672 B CN101852672 B CN 101852672B CN 2010101883174 A CN2010101883174 A CN 2010101883174A CN 201010188317 A CN201010188317 A CN 201010188317A CN 101852672 B CN101852672 B CN 101852672B
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Abstract
The invention relates to a high-speed train-tunnel aerodynamic characteristic movable model experiment system which comprises an air cannon launching device (6), a train model (1), a tunnel model (2) and a guide rail (3) in the tunnel model (2); the section of the cannon tube (4) of the air cannon launching device (6) is in the shape of a gate arch, the shape of the bottom (3') thereof is the same with the shape of the guide rail (3) in the tunnel model (2), and the bottom (3') and the guide rail (3) in the tunnel model (2) are connected into an integrated structure; and the section of the guide rail (3) is in an I-shaped structure, the middle at the bottom of the train model (1) is matched with the I-shaped structure of the guide rail (3), and the train model (1) is embedded on the guide rail (3) in a sliding mode. Through the system, the train model stably runs on the guide rail, the train model has large size and is more approximate to the real state of train running, and the aerodynamic characteristic of a train running in a tunnel can be better simulated and researched.
Description
Technical field
The present invention relates to a kind of bullet train-tunnel aerodynamic characteristic movable model experiment system.
Background technology
When to the aerodynamic characteristics research experiment of train, directly and real method is online real train test; Need expend great amount of manpower and material resources, financial resources but carry out once complete real train test, organize single test to be not easy very much, the data that obtain are limited, and natural conditions are ever-changing in addition, and are uncontrollable etc. as the wind speed and direction of environment, and repeatability is difficult to guarantee; And real train test needs just can carry out after train creates, and it is too high to be used to develop the new car cost.Therefore, real train test generally based on checking, assessment, certification test, is taken into account investigation test.Investigation test then mainly adopts model test to carry out.Train Aerodynamic Characteristics model test has wind tunnel model test, moving model experiment, water hole or tank model test etc.Moving model experiment has the emission-type movable model, two kinds of minitrain formula movable models.Wherein, minitrain formula movable model can simulate flow field more true to nature, helps the research of train surface physical quantity, but it exists expenditure of construction, experiment operation and all higher defective of maintenance cost.And the emission-type movable model can simulate higher speed, and is highly beneficial for the research of pressure wave, and experiment is simple, convenient, and expense is low.
At the fast development of current high-speed railway, under the situation that train is run at high speed, study pressure wave and how to reduce car tunnel aerodynamic effect, adopt emission-type movable model research experiment morely.It is two kinds of the air bubble emitters of power that the emitter of emission-type movable model has rubber catapult emitter and pressurized air; Guide rail then mainly adopts wire rope, and the movable model experiment system that with the wire rope is guide rail is because model vehicle and wire rope are conducted oneself with dignity, and deflection can take place the running orbit of vehicle, and experimental precision is greatly reduced, and can not launch big train model.
Summary of the invention
Purpose of the present invention just provides a kind of bullet train-tunnel aerodynamic characteristic movable model experiment system, this system makes train model even running on guide rail, the train model size is big, more near the time of day of train operation, the aerodynamic characteristics in the tunnel, moved of modeling effort train better.
The present invention realizes its goal of the invention, and the technical scheme that is adopted is: a kind of bullet train-tunnel aerodynamic characteristic movable model experiment system, comprise the guide rail in air bubble emitter, train model, tunnel model, the tunnel model, and its design feature is:
The cross section of the gun tube of described air bubble emitter is " gate arch " shape, and the guide rail shape in its bottom shape and the tunnel model is the same, and with tunnel model in being connected as a body of guide rail structure; The cross section of described guide rail is " worker " font structure, in the middle of the bottom of train model with " worker " font structure matching of guide rail, with the train model sliding gomphosis on guide rail.
The course of work of the present invention and principle are: before the experiment, be pushed on the guide rail in the gun tube being embedded in train model on the guide rail, the train model afterbody is positioned near the pressure-air emission port of gun tube.Start the air bubble emitter, moment sharply is pressed into pressure-air in gun tube, the train model afterbody is subjected to the impact force action of pressure-air, train model is quickened rapidly along guide rail, pass gun tube then, operation one segment distance on the guide rail that exposes is to stable speed of experiment, enter the tunnel again, and in the tunnel along guide rail high-speed cruising forward.Train model in the high-speed cruising, starts relevant detection observation instrument in the tunnel, the relevant kinetic parameter of the operation of train model in the tunnel is detected.According to detecting data bullet train-tunnel aerodynamic characteristic is carried out the modeling effort analysis then; For new car is built and car operation provides experimental basis.
Compared with prior art, the invention has the beneficial effects as follows:
One, than the guide rail of wire rope, the present invention high-intensity " worker " font guide rail had both had good vertical, located lateral effect to train model, train model can not be scratched simultaneously, and the running orbit of train model coincide with the ruuning situation of true train; The experimental data that draws is truer, reliable.
Two, because the intensity of I-shaped guide rail is big, big with the active area of train model, can carry bigger heavier train model, also more approaching with true train, guarantee that further the experimental data of its simulation is truer.Train model of the present invention is of a size of 15cm * 20cm (1: 15～1: 20), long 40cm.
Three, the integral structure of gun tube of " gate arch " tee section and gun tube bottom and tunnel guide rail, make that ride comfort is good in the train model accelerator, use aerodynamic force big gun emitter in addition, train model speed is greatly improved, to quality is the train model of 20kg～30kg, and its emission rate can reach 100m/s (360km/h).Make the present invention to simulate and to study to the car tunnel aerodynamic features of bullet train.
Four, the integral structure of gun tube bottom and tunnel guide rail, the accelerator that also makes train model enter tunnel model has good repeatability, the air pressure of the gases at high pressure of air bubble emitter emission is controllable in addition, can guarantee that air pressure in the car tunnel system involves the speed of a motor vehicle and has controllability.Thereby can carry out the raising and the research of the bullet train speed of a motor vehicle more accurate, more easily.
Five, the air bubble emitter test site that makes native system need is little, and the long-time stability height is beneficial to the carrying out of experiment work.
Between the lower surface wheel is installed in the middle of the upper surface of " worker " font structure of above-mentioned guide rail and the bottom of train model, the axletree of this wheel is fixed on the train model.
Like this, train model is in acceleration and operational process, and the friction between train model bottom and the guide rail upper surface becomes rolling friction by sliding friction, and its friction force is significantly reduced, train model speed further improves, and is simultaneously also more identical with the practical operation situation of train.
Above-mentioned gun tube is fastenedly connected formation like this, the processing and fabricating of convenient gun tube and maintenance by arch lid of " gate arch " shape and the bottom thread of " worker " font.
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram of the embodiment of the invention.
Fig. 2 is the gun tube of the embodiment of the invention and the amplification sectional structure synoptic diagram of the train model in the gun tube.
Fig. 3 is the tunnel of the embodiment of the invention and the amplification sectional structure synoptic diagram of the train model in the tunnel.
Embodiment
Embodiment
This routine embodiment is, Fig. 1 illustrates, and a kind of bullet train-tunnel aerodynamic characteristic movable model experiment system comprises the guide rail 3 in air bubble emitter 6, train model 1, tunnel model 2, the tunnel model 2.
Fig. 1,2,3 illustrates, and the cross section of the gun tube 4 of the air bubble emitter 6 that this is routine is " gate arch " shape, and guide rail 3 shapes in its bottom 3 ' shape and tunnel model 2 are the same, and with interior guide rail 3 the being connected as a body structures of tunnel model 2; The cross section of described guide rail 3 is " worker " font structure, in the middle of the bottom of train model 1 with " worker " font structure matching of guide rail 3, with train model 1 sliding gomphosis on guide rail 3.
Fig. 2 also illustrates, and between the lower surface wheel 5 is installed in the middle of the upper surface of " worker " font structure of this routine guide rail 3 and the bottom of train model 1, and the axletree of this wheel 5 is fixed on the train model 1.
Fig. 2 also illustrates, and this routine gun tube 4 is connected and composed by arch lid of " gate arch " shape and the bottom 3 ' screw threads for fastening of " worker " font.
Claims (3)
1. a bullet train-tunnel aerodynamic characteristic movable model experiment system comprises the guide rail (3) in air bubble emitter (6), train model (1), tunnel model (2), the tunnel model (2), it is characterized in that:
The cross section of the gun tube (4) of described air bubble emitter (6) is " gate arch " shape, and guide rail (3) shape in bottom (3 ') shape of gun tube (4) and the tunnel model (2) is the same, and with tunnel model (2) in guide rail (3) being connected as a body structure; The cross section of described guide rail (3) is " worker " font structure, in the middle of the bottom of train model (1) with " worker " font structure matching of guide rail (3), with train model (1) sliding gomphosis on guide rail (3).
2. a kind of bullet train-tunnel aerodynamic characteristic movable model experiment system according to claim 1, it is characterized in that: between the lower surface wheel (5) is installed in the middle of the upper surface of " worker " font structure of described guide rail (3) and the bottom of train model (1), the axletree of this wheel (5) is fixed on the train model (1).
3. a kind of bullet train-tunnel aerodynamic characteristic movable model experiment system according to claim 1 is characterized in that: described gun tube (4) is connected and composed by arch lid of " gate arch " shape and bottom (3 ') screw threads for fastening of " worker " font.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010101883174A CN101852672B (en) | 2010-06-01 | 2010-06-01 | High-speed train-tunnel aerodynamic characteristic movable model experiment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101883174A CN101852672B (en) | 2010-06-01 | 2010-06-01 | High-speed train-tunnel aerodynamic characteristic movable model experiment system |
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| Publication Number | Publication Date |
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| CN101852672A CN101852672A (en) | 2010-10-06 |
| CN101852672B true CN101852672B (en) | 2011-11-16 |
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| CN2010101883174A Expired - Fee Related CN101852672B (en) | 2010-06-01 | 2010-06-01 | High-speed train-tunnel aerodynamic characteristic movable model experiment system |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979994A (en) * | 2010-10-25 | 2011-02-23 | 中南大学 | Method for testing alternating airload of train body of high-speed train |
| CN104155079B (en) * | 2014-08-06 | 2016-08-24 | 山东大学 | Fluid-flow analogy apparatus and method in tunnel water bursting factor model test |
| CN106404341B (en) * | 2016-09-07 | 2019-07-16 | 甘肃路桥建设集团有限公司 | A kind of operation vehicle monitors Acquisition Instrument to highway, railway tunnel two sides impact force |
| CN109489999A (en) * | 2018-11-23 | 2019-03-19 | 淮阴工学院 | A kind of train pneumatic performance simulation model test apparatus and its test method |
| CN109708839A (en) * | 2019-02-12 | 2019-05-03 | 西南交通大学 | A kind of air pressure wave in tunnel testing experiment train model |
| CN110107331B (en) * | 2019-05-17 | 2020-07-28 | 北京交通大学 | High-speed railway tunnel decompression method |
| CN110440745B (en) * | 2019-08-14 | 2021-07-23 | 中铁西南科学研究院有限公司 | Lining deformation detection method and device and storage medium |
| CN112146902B (en) * | 2020-10-10 | 2022-05-06 | 中铁西南科学研究院有限公司 | Dynamic model test system and method for tunnel pneumatic effect in alpine and high-altitude environment |
| CN113820090A (en) * | 2021-08-23 | 2021-12-21 | 同济大学 | Pneumatic wind tunnel test section of long tunnel operation vehicle |
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| US6422058B1 (en) * | 2000-08-04 | 2002-07-23 | J. Edgar Myles | Railroad car coupling simulator and method |
| CN1861909A (en) * | 2005-05-11 | 2006-11-15 | 北京前沿科学研究所 | Magnetic suspension train guide rail |
| CN101476986A (en) * | 2009-01-23 | 2009-07-08 | 中国科学院力学研究所 | Movable model experiment system for high-speed train |
| CN101498622A (en) * | 2008-12-25 | 2009-08-05 | 中南大学 | Simulated moving model experiment method and apparatus for aerodynamic performance of train |
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2010
- 2010-06-01 CN CN2010101883174A patent/CN101852672B/en not_active Expired - Fee Related
Patent Citations (4)
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|---|---|---|---|---|
| US6422058B1 (en) * | 2000-08-04 | 2002-07-23 | J. Edgar Myles | Railroad car coupling simulator and method |
| CN1861909A (en) * | 2005-05-11 | 2006-11-15 | 北京前沿科学研究所 | Magnetic suspension train guide rail |
| CN101498622A (en) * | 2008-12-25 | 2009-08-05 | 中南大学 | Simulated moving model experiment method and apparatus for aerodynamic performance of train |
| CN101476986A (en) * | 2009-01-23 | 2009-07-08 | 中国科学院力学研究所 | Movable model experiment system for high-speed train |
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| 毛军 等.新型高速列车隧道空气动力学模型实验系统.《北方交通大学学报》.2003,第27卷(第4期), * |
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