Author(s)

L. Skerget & N. Samec

Abstract

The main purpose of this work is to present the use of boundary-domain integral method to analyse the flow behaviour of non-Newtonian fluid, ie. power law fluid. The available parametric model is applied representing a non-linear dependence between shear rate and deformation velocity. To evaluate the presented approach the Rayleigh-Benard natural convection of the Newtonian and non-Newtonian fluid has been solved. 1 Introduction In this study, the boundary-domain integral method (BDIM) for the numerical simulation of unsteady incompressible Newtonian fluid flow is extended to analyse the effects of available non-Newtonian viscosity. The constitutive hypothese used is that of two-parameters viscosity-strain rate approximation model representing power law fluid. Velocity-vorticity formulation^ of

Keywords