受电弓设备对列车气动特性影响的风洞试验

来源期刊:中南大学学报(自然科学版)2011年第12期

论文作者:杨明智

文章页码:3894 - 3898

关键词:受电弓;导流罩;高速列车;气动性能;风洞

Key words:pantograph; dome; high-speed train; aerodynamic characteristics; wind tunnel

摘    要:为了充分了解和掌握在强侧风作用下受电弓设备(受电弓和导流罩)对高速列车气动性能的影响,通过风洞试验对强侧风下高速列车运行时的气动性能进行测量和分析。实验结果表明:当侧滑角小于15°时,列车模型阻力系数随着侧滑角的增大而增加,当侧滑角为15°时,阻力系数出现拐点,拐点后阻力系数开始下降,其侧向力系数的绝对值和升力系数随着侧滑角的增大而增加;受电弓设备对头车的影响较小,但可使中车侧向力系数的绝对值及阻力系数明显增加,使尾车的阻力系数明显减小,而侧向力系数明显增加;受电弓设备中“浴盆”式导流罩对高速列车阻力系数的影响强于“挡板”式导流罩的影响,但对升力系数及侧向力系数的影响弱于“挡板”式导流罩的影响。

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 baffle dome , while the effect on the lift coefficient and the side force coefficient is weaker than that of “baffle” dome.

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