High-speed train-tunnel aerodynamic characteristic movable model experiment system

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 [0001] The invention relates to a high-speed train-tunnel aerodynamic characteristic dynamic model test system. Background technique [0002] When conducting experimental research on the aerodynamic characteristics of trains, the direct and real method is the online real-car test; however, a complete real-car test requires a lot of manpower, material and financial resources, and it is not easy to organize a test. Due to limited data and ever-changing natural conditions, such as the uncontrollable wind speed and direction of the environment, repeatability is difficult to guarantee; moreover, the actual vehicle test can only be carried out after the train is manufactured, which is too expensive to develop a new vehicle. Therefore, the actual vehicle test generally focuses on verification, evaluation, and assessment tests, with research tests also taken into consideration. Research experiments are mainly carried out by model tests. Model tests for the study of...

AI Technical Summary

Problems solved by technology

There are two types of launching devices for launching dynamic models: rubber slingshot launching devices and compressed air-powered air cannon launching devices; the guide rail mainly uses steel wire ropes, and the dynamic model test system with steel wire ropes as guide rails is difficult for the operation of the vehicle due to the weight of the model vehicle and the steel wire rope. Trajectories will warp, making experiments much less accurate, and making it impossible to launch large train models

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