Oscillating flow over a half circular on a plane was studied numerically by solving two-dimensional incompressible Navier-Stokes equations by using the non-staggered-grid, fraction step method for KC=0.5, 6.0, and Re=...Oscillating flow over a half circular on a plane was studied numerically by solving two-dimensional incompressible Navier-Stokes equations by using the non-staggered-grid, fraction step method for KC=0.5, 6.0, and Re=500, 2000, 10000. At small KC number, only the Stokes layer occurs and the thickness of the Stokes layer becomes thinner with Re increase. At higher KC value, the vortex shedding appears and the vortices shed from the cylinder interact further with the boundary layer formed on the plane. The influence of KC and Re on force behavior was also discussed.展开更多
文摘Oscillating flow over a half circular on a plane was studied numerically by solving two-dimensional incompressible Navier-Stokes equations by using the non-staggered-grid, fraction step method for KC=0.5, 6.0, and Re=500, 2000, 10000. At small KC number, only the Stokes layer occurs and the thickness of the Stokes layer becomes thinner with Re increase. At higher KC value, the vortex shedding appears and the vortices shed from the cylinder interact further with the boundary layer formed on the plane. The influence of KC and Re on force behavior was also discussed.