Effect of Surface Grooves on a Channel Flow

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  • YAMAMOTO Kyoji
    Department of Mechanical Engineering, Faculty of Engineering, Okayama University
  • TANIWAKI Mitsuhiro
    Mechanical Engineering, Niihama National College of Technology
  • TAKEUCHI Hideki
    Department of Mechanical Engineering, Faculty of Engineering, Okayama University
  • HYAKUTAKE Toru
    Department of Mechanical Engineering, Faculty of Engineering, Okayama University

Bibliographic Information

Other Title
  • 凹凸のある壁の流れに及ぼす効果
  • オウトツ ノ アル カベ ノ ナガレ ニ オヨボス コウカ

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Abstract

  Effects of surface grooves on the rarefied gas flow through a channel are investigated numerically using the linearized B-G-K equation. One wall of the channel has rectangular grooves engraved periodically parallel or normal to the flow direction, and the other wall is flat. Couette and Poiseuille flows are analyzed. It is shown that in case of normal grooves, the flux through the channel has a minimum when the depth of the groove is about half of its width. For parallel grooves, the flux is considerably low compared with that of the smooth walls of the channel when the groove width and pitch are comparatively smaller than the channel width.<br>

Journal

  • Shinku

    Shinku 49 (8), 488-492, 2006

    The Vacuum Society of Japan

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