On the Drag Reduction Optimization of the DrivAer Fastback Model Car with Digital Side Mirror

doi:10.4271/06-14-01-0005

機構典藏 > College of Engineering > Graduate Institute & Department of Aerospace Engineering > Journal Article > Item 987654321/120830

Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/120830

Title:	On the Drag Reduction Optimization of the DrivAer Fastback Model Car with Digital Side Mirror
Authors:	Chiang, I-Ying;Wan, Tung
Keywords:	DrivAer Model;Drag Reduction;Digital Side Mirror;Kriging Model
Date:	2021-04-30
Issue Date:	2021-06-10 12:10:26 (UTC+8)
Publisher:	SAE International
Abstract:	The traditional side mirrors on automobile could create substantial part of drag in the total car aerodynamic design consideration. On some concept cars, digital side mirrors have been installed which are aiming to reduce the total drag, thus the optimization study of digital side mirrors configuration becomes an important task. In this study the benchmark DrivAer fastback model is employed for optimization work of digital side mirrors via computation fluid dynamics software, and simulated with realistic moving ground and rotating wheel conditions. In order to validate the lift and drag coefficients with existing experimental data, the wheel rotation is implemented by three different kinds of rotating methods: Moving Wall, Multiple Reference Frame and Sliding Mesh, while the Sliding Mesh method provides the most accurate results. For optimization work, a concept of digital side mirror configuration is created, and the objective is aiming the best drag reduction via various installation positions by using the surrogate method which is based on Kriging model. The results show for the best achieved side mirror location, it is observed that a positive effect of drag reduction from increasing the intensity of some specific vortices, and its wake region can be weaker than the original configuration.
Relation:	SAE International Journal of Passenger Cars—Mechanical Systems 14(1)
DOI:	10.4271/06-14-01-0005
Appears in Collections:	[Graduate Institute & Department of Aerospace Engineering] Journal Article

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