Transition to Turbulence in a Pulsatile Pipe Flow Part 1,Wave Forms and Distribution of Pulsatile Velocities near Transition Region
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概要
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Pulsatile flow in a circular pipe can be characterized by three parameters, i.e., the dimensionless frequency, the time-averaged Reynolds number, and the velocity amplitude ratio. Here by changing the time-averaged Reynolds number from 0 to about 2.4×10^4,velocity measurements were made by means of a hot wire anemometer. From output signals of pulsatile velocity the flows near the transition region were classified into the following three types ; (1) laminar flow, (2) disturbed flow, and (3) turbulent flow. The distributions of oscillatory and time-averaged axial velocity components in each type of flow were characterized with respect to time-averaged Reynolds number.
- 一般社団法人日本機械学会の論文
著者
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IGUCHI Manabu
Faculty of Engineering, Osaka University
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Iguchi M
Osaka Univ. Osaka Jpn
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OHMI Munekazu
Faculty of Engineering, Osaka University
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URAHATA Ikuo
Faculty Engineering. Oasaka University
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Urahata Ikuo
Faculty Of Engineering Osaka University
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Iguchi Manabu
Faculty Engineering Osaka University
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Ohmi M
Teikyo Univ. Utsunomiya Jpn
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Ohmi Munekazu
Faculty Of Engineering Osaka University
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Ohmi Munekazu
Faculty Engineering Osaka University
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