Applied Mathematics and Mechanics (English Edition) ›› 2014, Vol. 35 ›› Issue (5): 549-566.doi: https://doi.org/10.1007/s10483-014-1812-6

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Study of shear-thinning/thickening effects on plane Couette-Poiseuille flow with uniform crossflow

刘玉泉 朱克勤   

  1. Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P. R. China
  • 收稿日期:2013-05-27 修回日期:2013-11-23 出版日期:2014-05-01 发布日期:2014-05-01

Study of shear-thinning/thickening effects on plane Couette-Poiseuille flow with uniform crossflow

 LIU Yu-Quan, ZHU Ke-Qin   

  1. Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P. R. China
  • Received:2013-05-27 Revised:2013-11-23 Online:2014-05-01 Published:2014-05-01

摘要: The shear-thinning/thickening effects on the plane Couette-Poiseuille flow with a uniform crossflow are studied. The detailed solution procedures for both theoretical and numerical purposes are given. In order to clarify the difference between the Newtonian flow and the power-law flow, all cases of the plane Couette-Poiseuille flows with uniform crossflows for different power indexes are assigned to the phase diagram in the parameter plane corresponding to the Couette number and the crossflow Reynolds number. The effects of shear-thinning/thickening on the phase diagram are discussed. An important feature of the shear-thinning circumstance distinguished from the shearthickening circumstance is discovered.

关键词: Zakharov equation, equation of Langmuir turbulence, approximation, Couette-Poiseuille flow, crossflow, power-law fluid, phase diagram

Abstract: The shear-thinning/thickening effects on the plane Couette-Poiseuille flow with a uniform crossflow are studied. The detailed solution procedures for both theoretical and numerical purposes are given. In order to clarify the difference between the Newtonian flow and the power-law flow, all cases of the plane Couette-Poiseuille flows with uniform crossflows for different power indexes are assigned to the phase diagram in the parameter plane corresponding to the Couette number and the crossflow Reynolds number. The effects of shear-thinning/thickening on the phase diagram are discussed. An important feature of the shear-thinning circumstance distinguished from the shearthickening circumstance is discovered.

Key words: Zakharov equation, equation of Langmuir turbulence, approximation, Couette-Poiseuille flow, crossflow, power-law fluid, phase diagram

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