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Model free active flow control of a simplified car model

机译:简化汽车模型的无模型主动流量控制

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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:提出了一种无模型控制(MFC)方法,该方法用于对称化名为Ahmed车身的简化汽车模型的不稳定尾流。关于低压尾流涡流芯的时空演化的这种不稳定现象已知会增加方后方飞行器的整体阻力。结果突出显示了MFC通过使用侧吹缝隙喷嘴减少尾流对称性破坏现象的能力。提出了一种来自(Fliess and Join,2013)的无模型控制方案,并提出了调整程序。最后提供了风洞中艾哈迈德人体的实验结果。

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