Aerodynamic Wind Tunnel Test Analysis Based on Actual Vehicle Driving Attitude
In this paper,we introduce the first vehicle wind tunnel in China that can simulate the vehicle driving attitude on the road.By comparing the test data of multiple types of vehicles measured by two kinds of balance connection methods,it is concluded that the floating range of general test vehicles is 3 to 4 mm,and the floating range of performance vehicles is 2 to 3 mm.Since both the wind drag coefficient and the yaw state increase with the wind speed,the air flow rate is set to 140 km/h at high speed in this paper.Under this wind tunnel testing environment,the wind drag coefficient of the floating mode is 0.001～0.003 higher than that in the fixed mode,and the yaw torque of the two modes varies from 3 to 23 count.Therefore,in the aerodynamic wind tunnel test,the different connection modes between the vehicle and the balance have a significant impact on the test results,and the appropriate connection method should be selected according to the test requirements to obtain more real test data.
floating modeaerodynamic characteristicswind tunnel test
万方数据
维普
