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原文传递 Research on the Rear-Spoiler Winglet to Further Improve the Aerodynamic Performance of Hatch-Back Vehicles

题名：	Research on the Rear-Spoiler Winglet to Further Improve the Aerodynamic Performance of Hatch-Back Vehicles
正文语种：	中文
作者：	He Yue
作者单位：	Centre,Changan Global R&D Institute
关键词：	aerodynamics winglet drag-reduction CFD simulation wind-tunnel test base pressure wake flow
摘要：	This paper presents a new type of aerodynamic optimization in terms of cutting down aero-drag without compromising huge numbers of styling features or inercasing the weight considerably.The ideology of adding winglet to each side of the rear-spoiler was firstly brought to us by some previous SAE papers[1],which unfortunately,depict this optimization in rather vague manners.With the help of the geometrical graph included in those papers,a similar winglet model was built and added to the full-vehicle model,followed by a series of computational verifications on commercial CFD software.By carefully investigating the flow field around the rear-spoiler and vehicle back region,some size and shape adjustments were made to the winglet to maximize its effect of decreasing aero-drag.Later,different sets of real winglet prototypes were made and tested in 3 different wind-tunnel experiments,during which the effect of winglets on drag-reduction has been confirmed and compared with the results from CFD simulation.Discussion and analysis on the disparity be-tween test results and the numerical ones has been conducted,followed by the final conclusion.
会议日期：	20171024
会议举办地点：	上海
会议名称：	第19届亚太汽车工程年会暨2017中国汽车工程学会年会
出版日期：	1024-01-20
母体文献：	第19届亚太汽车工程年会暨2017中国汽车工程学会年会论文集