화학공학소재연구정보센터
Journal of Non-Newtonian Fluid Mechanics, Vol.87, No.2-3, 215-246, 1999
Viscoelastic flow through a planar contraction using a semi-Lagrangian finite volume method
A semi-lagrangian finite volume scheme for solving viscoelastic flow problems is presented. A staggered grid arrangement is used in which the dependent variables are located at different mesh points in the computational domain. The convection terms in the momentum and constitutive equations are treated using a semi-lagrangian approach in which particles on a regular,grid are traced backwards over a single time-step. The method is applied to the 4 : 1 planar contraction problem for an Oldroyd B fluid for both creeping and inertial flow conditions. The development of vortex behaviour with increasing values of We is analyzed. (C)1999 Elsevier Science B.V. All rights reserved.