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Plasma Streamwise Vortex Generators for Flow Separation Control on Trucks

机译:等离子流涡流发生器用于卡车的流分离控制

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摘要

An experimental study of the effect of Dielectric Barrier Discharge plasma actuators on the flow separation on the A-pillar of a modern truck under cross-wind conditions has been carried out. The experiments were done in a wind tunnel with a 1:6 scale model of a tractor-trailer combination. The actuators were used as vortex generators positioned on the A-pillar on the leeward side of the tractor and the drag force was measured with a wind-tunnel balance. The results show that the effect at the largest yaw angle (9 degrees) can give a drag reduction of about 20% and that it results in a net power reduction. At lower yaw angles the reduction was smaller. The present results were obtained at a lower Reynolds number and a lower speed than for real driving conditions so it is still not yet confirmed if a similar positive result can be obtained in full scale.
机译:在横风条件下,对介质阻挡放电等离子体致动器对现代卡车A柱上的流动分离的影响进行了实验研究。实验是在风洞中以拖拉机和拖车的1:6比例模型进行的。致动器用作位于拖拉机背风侧A柱上的涡流发生器,并通过风洞天平测量了拖曳力。结果表明,在最大偏航角(9度)下的效果可以使阻力减小约20%,并导致净功率减小。在较低的偏航角下,减小较小。目前的结果是在比实际驾驶条件下更低的雷诺数和更低的速度下获得的,因此,仍无法确定是否可以全面获得相似的肯定结果。

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