Journal
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
Volume 22, Issue 1, Pages 24-38Publisher
EMERALD GROUP PUBLISHING LTD
DOI: 10.1108/09615531211188775
Keywords
Slip; Heat transfer; Flow; Numerical analysis
Funding
- Higher Education Commission (HEC) of Pakistan
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Purpose - The purpose of this paper is to study the effects of nonlinear partial slip on the walls for steady flow and heat transfer of an incompressible, thermodynamically compatible third grade fluid in a channel. The principal question the authors address in this paper is in regard to the applicability of the no-slip condition at a solid-liquid boundary. The authors present the effects of slip, magnetohydrodynainics (MHD) and heat transfer for the plane Couette, plane Poiseuille and plane Couette-Poiseuille flows in a homogeneous and thermodynamically compatible third grade fluid. The problem of a non-Newtonian plane Couette flow, fully developed plane Poiseuille flow and Couette-Poiseuille flow are investigated. Design/methodology/approach - The present investigation is an attempt to study the effects of nonlinear partial slip on the walls for steady flow and heat transfer of an incompressible, thermodynamically compatible third grade fluid in a channel. A very effective and higher order numerical scheme is used to solve the resulting system of nonlinear differential equations with nonlinear boundary conditions. Numerical solutions are obtained by solving nonlinear ordinary differential equations using Chebyshev spectral method. Findings - Due to the nonlinear and highly complicated nature of the governing equations and boundary conditions, finding an analytical or numerical solution is not easy. The authors obtained numerical solutions of the coupled nonlinear ordinary differential equations with nonlinear boundary conditions using higher order Chebyshev spectral collocation method. Spectral methods are proven to offer a superior intrinsic accuracy for derivative calculations. Originality/value - To the best of the authors' knowledge, no such analysis is available in the literature which can describe the heat transfer, MHD) and slip effects simultaneously on the flows of the non-Newtonian fluids.
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