車両床下流れの研究 ―第2報：LESによるCFD解析：単純化された床下形状の場合―

鬼頭 幸三; 坪倉 誠; 大島 伸行; 山本 誠; 張 会来; 大西 慶治; 中島 卓司; 小林 敏雄

doi:10.11188/seisankenkyu.59.27

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Study on the underbody flow of the vehicle

—Report 2: CFD analysis via LES: Case of simplified underbody configurations—

Kozo KITOH, Makoto TSUBOKURA, Nobuyuki OSHIMA, Makoto YAMAMOTO, ZHANG HUILAI, Keiji OHNISHI, Takuji NAKASHIMA, Toshio KOBAYASHI

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JOURNAL FREE ACCESS

2007 Volume 59 Issue 1 Pages 27-30

DOI https://doi.org/10.11188/seisankenkyu.59.27

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Abstract

The objective of this study is to find out a way to reduce aerodynamic drag of the vehicle body focusing on the underbody flow. LES computations were performed for a simplified vehicle body using ca. 25 million meshes. It was found from the comparison with the experiment that LES well reproduces mean flow field around the vehicle. Large scale LES computation can be an effective tool to evaluate vehicle aerodynamic characteristics. Comparisons with RANS results were also made. [This abstract is not included in the PDF]

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