Wall stagnating flow near the wall oscillated parallel to the flow

Taro Hirasawa, Toshihisa Ueda, Akiko Matsuo, Masahiko Mizomoto

研究成果: Article

2 引用 (Scopus)

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The velocity variation induced by the sinusoidal wall oscillation is measured along the stagnating streamline and its amplitude is estimated. The mechanisms of the flow velocity oscillation are discussed in terms of the amplitude of the flow velocity oscillation when the angular frequency of the wall oscillation w, the average distance between the nozzle and the wall ȳ. and the flow velocity at the nozzle exit Uo are varied. The characteristics of the flow velocity oscillation are classified into three regions by a Strouhal number S=w|ȳw/Uo. When S<2, the flow velocity variation follows the change of the wall location in a quasi-steady state. On the other hand, when S>6, it is dominated by the change of the wall velocity. In between, 2<S<6, the transition region is observed.

元の言語English
ページ(範囲)2683-2689
ページ数7
ジャーナルNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
64
発行部数624
DOI
出版物ステータスPublished - 1998 1 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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