Flow of Non-Newtonian Fluids in Curved Pipes : Turbulent Flow

• TAKAMI Toshihiro

  Faculty of Engineering, Hiroshima University

• SUDOU Kouzou

  Faculty of Engineering, Hiroshima University

• TOMITA Yukio

  Faculty of Engineering, Tokyo University of Science

抄録

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.

収録刊行物

• JSME international journal. Ser. 2, Fluids engineering, heat transfer, power, combustion, thermophysical properties

  JSME international journal. Ser. 2, Fluids engineering, heat transfer, power, combustion, thermophysical properties 33 (3), 476-485, 1990-08-15

  一般社団法人日本機械学会

キーワード

• Non-Newtonian Fluid
• Turbulent Flow
• Three-Dimensional Flow
• Secondary Flow
• LDV
• Numerical Analysis
• Curved Pipe
• Reynolds Stress Model
• Power Law Fluid

詳細情報

• CRID: 1572824502013525888
• NII論文ID: 110002491524
• NII書誌ID: AA10680596
• ISSN: 09148817
• 本文言語コード: en
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