Thermal convection of viscoelastic shear-thinning fluids

被引：2

作者：

Albaalbaki, Bashar ^{[1
]}

Khayat, Roger E. ^{[1
]}

Ahmed, Zahir U. ^{[1
,2
]}

机构：

[1] Univ Western Ontario, Dept Mech & Mat Engn, London, ON N6A 5B9, Canada

[2] Khulna Univ Engn & Technol, Dept Mech Engn, Khulna 9203, Bangladesh

来源：

FLUID DYNAMICS RESEARCH | 2016年 / 48卷 / 06期

关键词：

Rayleigh-Benard convection; viscoelasticity; nonlinear treatment; RAYLEIGH-BENARD CONVECTION; WEAKLY NONLINEAR-ANALYSIS; PATTERN SELECTION; MAGNETIC FLUID; FLOWS; CHAOS; INSTABILITIES; TRANSITION; BEHAVIOR; CHANNEL;

D O I：

10.1088/0169-5983/48/6/061406

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The Rayleigh-Benard convection for non-Newtonian fluids possessing both viscoelastic and shear-thinning behaviours is examined. The Phan-Thien-Tanner (PTT) constitutive equation is implemented to model the non-Newtonian character of the fluid. It is found that while the shear-thinning and viscoelastic effects could annihilate one another for the steady roll flow, presence of both behaviours restricts the roll stability limit significantly compared to the cases when the fluid is either inelastic shear-thinning or purely viscoelastic with constant viscosity.

引用

页数：25

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