Flow of Non-Newtonian Fluids in Curved Pipes : Turbulent Flow
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概要
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A developing turbulent flow of power law fluids in the entrance region of curved pipes has been investigated by measuring an axial component of the mean and the fluctuating velocity with an optical fiber LDV under the condition of power index n>0.75, two curvature radius ratios R_C=10 and 30, and Reynolds numbers Re=10000〜33000. Turbulent flow develops more mildly than laminar flow, which leads to longer inlet length. A Reynolds stress equation model is applied to predict a fully developed turbulent flow. Numerical results are in moderate agreement with experimental results within the power index n=1〜0.9. In addition, an approximate expression for the turbulent friction coefficient is presented on the basis of the boundary layer theory.
- 一般社団法人日本機械学会の論文
- 1990-08-15
著者
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TOMITA Yukio
Faculty of Education, Hokkaido University of Education
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Tomita Y
Faculty Of Engineering Tokyo University Of Science
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Tomita Y
Science Univ. Tokyo Noda Jpn
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Tomita Yukio
Faculty Of Science And Technology Science University Of Tokyo
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Takami Toshihiro
Faculty Of Engineering Hiroshima University
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Sudou Kouzou
Faculty Of Engineering Hiroshima University
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