Flow Pattern and Frictional Losses in Pulsating Pipe Flow : Part l, Effect of Pulsating Frequency on the Turbulent Flow Pattern

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概要

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• Pulsating turbulent pipe flow was measured at the time - averaged Reynolds number of about 5.7×1-^4 and over wide ranges of both frequency and velocity amplitude ratio. The flow pattern in an incompressible turbulent pipe flow was found to be described by four characteristic parameters and not to be affected so much by four characteristic parameters and not to be affected so much by velocity amplitude ratio. Further, the flow patterns were classified into three types, i.e., quasi-steady, intermediate, and inertia dominant ones with respect to the dimensionless frequency ω'. The values of ω' representing the limits between three regions were proposed.

• 一般社団法人日本機械学会の論文

著者

• IGUCHI Manabu

  Faculty of Engineering, Osaka University

• Iguchi Manabu

  Faculty Of Engineering Osaka University

• OHMI Munekazu

  Faculty of Engineering, Osaka University

• USUI Tateo

  Faculty of Engineering, Osaka University

• MINAMI Haruyasu

  Marushima Hydraulic Works, Ltd.

• Iguchi Manabu

  Faculty Engineering Osaka University

• Usui Tateo

  Faculty Of Engineering Osaka University

• Ohmi Munekazu

  Faculty Of Engineering Osaka University

• Minami Haruyasu

  Marushima Hydraulic Works Ltd.

• Ohmi Munekazu

  Faculty Engineering Osaka University

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