MIRA快背式模型主动减阻研究*

doi:10.19562/j.chinasae.qcgc.2020.05.004

Abstract

Abstract: By referring to the mechanism of passive drag reduction, jet ports are set in several positions of MIRA body to realize jet air blowing, so as to reduce the pressure on the windward side of the model or increase the pressure on the leeward side. The simulation accuracy is verified by comparing the transient simulation and experimental results of the original MIRA model. The transient simulation results of several jet flow conditions and original model are compared and analyzed. By comparing drag coefficient, surface static pressure coefficient and directional vorticity, the drag reduction effects of local jet flow are ascertained, and a 16.3% reduction of drag coefficient is achieved in the end

Key words: MIRA fastback model, Lattice Boltzmann method, VLES, flow control, jet drag reduction

Zhang Yingchao, Zheng Zhenyu, Wu Kaiguang, Zhang Zhe. Research on Active Drag Reduction of MIRA Fastback Model[J].Automotive Engineering, 2020, 42(5): 588-592.

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Research on Active Drag Reduction of MIRA Fastback Model

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