2011•Journal of Central South University(Science and Technology)Requires access
Wind tunnel experimental of impact on aerodynamic characteristics for vehicle by pantograph equipment
Mingzhi Yang
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Abstract
In order to study the impact of pantograph equipment(pantograph and the dome) on the aerodynamic performance of high-speed trains in cross wind,the aerodynamic properties of high-speed train were measured and analyzed by wind tunnel test.The results show that when the yaw angle is less than 15°,the train resistance coefficient increases with the increase of yaw angles;when the yaw angle is 15°,drag coefficient meets the inflection point,and it declines after the inflection point,and the absolute value of side force coefficient and the lift coefficient increase with the increase of the yaw angle.The impact of pantograph equipment on head car is smaller,but the absolute value of side force coefficient and the drag coefficient of middle car increase significantly.The drag coefficient of the last car reduces,and its side force coefficient increases significantly.The effect of bathtub dome on the drag coefficient of high-speed train is stronger than that of dome,while the effect on the lift coefficient and the side force coefficient is weaker than that of baffle dome.