Viscoplastic Fluid Flow Between Parallel Plates With Triangular Obstacles

Abstract

In the present research, the flow of visco-plastic fluid is investigated in a duct with triangular obstacles on the bottom plate. The effect of different inlet velocities on the flow behavior is observed specially around the obstacles. The viscosity as the function of velocity gradient and hence the Reynolds numbers, are obtained on certain lines for different values of fluid characteristics and flow indexes. Herschel-Bulkley model as a generalized model of visco-plastic fluids is used to simulate the fluid motion along the channel. Reverse flows and vortexes are shown before and past the obstacles.