Aerodynamic characteristics test system and test method of mobile train based on wind pressure integration

Abstract

A system for testing aerodynamic characteristics of a movable train on the basis of a wind pressure integral comprises a simulator (1), a wind pressure measuring point (2) and a testing device (3), wherein the simulator (1) is used for simulating the movable train; the wind pressure measuring point (2) is arranged on the simulator (1); the testing device (3) is used for acquiring aerodynamic characteristic information from the simulator (1); and the simulator (1) and the testing device (3) are mutually connected through wireless transmitting and receiving modules (4) arranged inside the simulator (1) and the testing device (3) respectively. The air pressure can be directed measured by the aid of the testing system, so that interference of the external force to an aerodynamic test result can be effectively avoided, the accuracy of the test result is guaranteed, and an technical assurance can be provided for experimental researches on the aerodynamic performance of a high-speed railway 'wind-train-bridge' system.

Description

technical field [0001] The invention relates to the technical field of testing the aerodynamic characteristics of mobile trains, in particular to a testing system and a testing method for the aerodynamic characteristics of mobile trains based on wind pressure integration. Background technique [0002] With the rapid development of my country's high-speed railways, the safety of high-speed trains under wind loads has attracted widespread attention, and accurate acquisition of train aerodynamic forces is a prerequisite for evaluating its operating safety. Most of the existing research results on the aerodynamic characteristics of trains are obtained based on the aerodynamic tests of stationary trains, without considering the running speed of the trains. At present, the running speed of high-speed trains reaches 80m / s, which is much higher than the natural wind speed in a good climate (usually the top of the train The wind speed is less than 20m / s), so there may be hidden dange...

AI Technical Summary

Problems solved by technology

Most of the existing research results on the aerodynamic characteristics of trains are obtained based on the aerodynamic tests of stationary trains, without considering the running speed of the trains. At present, the running speed of high-speed trains reaches 80m / s, which is much higher than the natural wind speed in a good climate (usually the top of the train The wind speed is less than 20m / s), so there may be hidden dangers in evaluating the operation safety of high-speed trains using the aerodynamic test results of stationary trains

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