Tunnel aerodynamic effect motion model test system and method in high-cold and high-altitude environment

A technology of tunnel model and test system, which is applied in the field of dynamic model test system for tunnel aerodynamic effects in high-cold and high-altitude environments to achieve accurate effects in high-cold and high-altitude environments

Active Publication Date: 2020-12-29
中铁西南科学研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of these problems are only solved through theoretical calculations and numerical simulations, and no actual vehicle tests have been carried out in high-altitude regions.

Method used

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  • Tunnel aerodynamic effect motion model test system and method in high-cold and high-altitude environment
  • Tunnel aerodynamic effect motion model test system and method in high-cold and high-altitude environment
  • Tunnel aerodynamic effect motion model test system and method in high-cold and high-altitude environment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Such as image 3 As shown, the simulated tunnel entrance and exit 21 are all H meters above sea level, and the temperature is an alpine and high altitude environment of T1. (both ends should be the same)

[0062]First, through the tunnel entrance and exit 21 on-the-spot measurement, consulting the atmospheric pressure gauge and other methods, the atmospheric pressure obtained when the altitude is H meters and the temperature is T1 is P1; machine and refrigeration system, so that the temperature in the first heat preservation pressure chamber 71 and the second heat preservation pressure chamber 72 reaches T1, and the atmospheric pressure reaches P1; Manometer 6, observe whether parameters such as temperature and pressure meet the requirements and remain stable; finally, if it is stable, start the air cannon 11 to start the dynamic model test.

Embodiment 2

[0064] Such as Figure 4 As shown, the simulated tunnel entrance and exit 21 are all H meters above sea level, and the temperature is respectively the alpine and high altitude environment of T2 and T3.

[0065] First, through the tunnel entrance and exit 21 on-the-spot measurement, consulting the atmospheric pressure gauge and other methods, obtain the atmospheric pressure P2 and P3 when the altitude H meters and the air temperature are respectively T2 and T3; then, start the first heat preservation pressure chamber 71 and the second heat preservation pressure The air compressor and refrigeration system in the warehouse 72 make the temperature in the first heat preservation pressure chamber 71 reach T2, the atmospheric pressure reach P2, the temperature in the second heat preservation pressure chamber 72 reach T3, and the atmospheric pressure reach P3; again, check the heat preservation pressure chamber 7 With the thermometer 6 on the tunnel, observe whether parameters such as...

Embodiment 3

[0067] Such as Figure 5 As shown, the simulated tunnel entrance and exit 21 are H1 and H2 meters above sea level, and the temperature is T4 and T5 respectively in the high-cold and high-altitude environment.

[0068] First, through the tunnel entrance and exit 21 on-the-spot measurement, consulting the atmospheric pressure gauge, etc., obtain the atmospheric pressure P4 and P5 when the altitude is respectively H1 and H2 meters, and the temperature is T4 and T5 respectively; then, start the first thermal insulation pressure chamber 71 and The air compressor and refrigeration system of the second thermal insulation pressure chamber 72 make the temperature in the first thermal insulation pressure chamber 71 reach T4, the atmospheric pressure reaches P4, the temperature in the second thermal insulation pressure chamber 72 reaches T5, and the atmospheric pressure reaches P5; again, check Insulation pressure chamber 7 and the thermometer 6 on the tunnel observe whether parameters s...

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Abstract

The invention discloses a tunnel aerodynamic effect motion model test system and method in a high-cold and high-altitude environment, and relates to the field of tunnel aerodynamic dynamic model tests. The system is characterized in that a first thermal insulation pressure bin and a second thermal insulation pressure bin are arranged at two ends of a model test bed to form a closed system with a tunnel model; and a train model is located on a guide rail and enters a gun barrel of an air cannon through high-pressure gas, an acceleration piston is pushed to drive a whole moving part to accelerate forwards, and therefore acceleration of the train model is achieved, and different temperatures and air pressures are adjusted at the two sides respectively to be used for simulating the design, construction and operation processes of the high-cold and high-altitude tunnel. Corresponding aerodynamic parameters are recorded to provide experimental support for development of actual engineering, and high-speed train tunnel aerodynamic motion model experimental research in high-cold and high-altitude areas can be developed by the aid of the train motion model simulation system and the train motion model test method in the high-cold areas.

Description

technical field [0001] The invention relates to the field of dynamic model tests of tunnel aerodynamics, in particular to a system and method for dynamic model tests of tunnel aerodynamic effects in high-cold and high-altitude environments. Background technique [0002] At present, the research methods of high-speed train tunnel aerodynamics at home and abroad mainly include theoretical analysis, numerical simulation, real vehicle test and dynamic model test. The results of theoretical analysis and numerical simulation need to be verified by real vehicle test or dynamic model test. To carry out the real vehicle test of the high-speed vertical vehicle, it needs the coordination and organization of various parties such as the railway authority, the vehicle factory and the research institution, which consumes a lot of manpower and material resources and takes a long time to carry out. Therefore, the dynamic model test is a method for studying the aerodynamics of high-speed tra...

Claims

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Application Information

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IPC IPC(8): G01M17/08G01M9/08G01M9/06
CPCG01M17/08G01M9/08G01M9/06
Inventor 史宪明吴剑万晓燕杜云超刘志强郑波郭瑞欧小强陈鹏刘凯许召强朱建林
Owner 中铁西南科学研究院有限公司
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