J0101-3-2 Numerical study of boundary condition of the cylinder end face in Taylor vortex flow

Abstract

Taylor vortex flow appears between two concentric rotating cylinders, for example, fluid bearings of hard disks etc. It is important to investigate Taylor vortex flow in order to control flows. When the velocity of inner cylinder changes, the flow suddenly becomes unstable and develops into vortex flow having different number of cells. Cylinder torque applied to the cylinder walls and mean kinetic energy change sharply, and it leads to the deterioration and destruction of the container. The boundary layer of the end plane affected to the entire flow. In this study, we change the boundary condition of the end plane, and analyze the influence to the bifurcation diagram. When Raynolds number is decreased, the bifurcation occurs.