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Model free active flow control of a simplified car model

机译:模型自由主动流量控制简化汽车模型

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A model free control (MFC) approach is presented and used to symmetrize the unstable wake flow of a simplified car model named Ahmed body. Such unstable phenomena with regards to the space-time evolution of the low pressure wake vortex core, is known to increase the global drag of square back vehicles. Results highlight the ability of a MFC to reduce the wake symmetry breaking phenomena by using lateral blowing slit jets. A model free control scheme derived from (Fliess and Join, 2013) is proposed and a tuning procedure is suggested. At last experimental results on an Ahmed body in wind tunnel are provided.
机译:提出了一种自由控制(MFC)方法,并用于对称一个名为Ahmed Body的简化汽车模型的不稳定唤醒流。众所周知,对于低压唤醒涡流的时空演变,这种不稳定的现象是众所周知的,可以增加平方车辆的全球拖动。结果突出了MFC通过使用横向吹缝射流来减少唤醒对称性破碎现象的能力。提出了一种衍生自(Fliess和Join,2013)的模型自由控制方案,并提出了调整程序。在上次在风隧道中的艾哈迈德身体上的实验结果。

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