论文部分内容阅读
Oscillating flow over a half circular cylinder on a plane is studied numerically by solving the two-dimensional incompressible Navier-Stokes equations using thenon-staggered-grid, fractional step method for KC =0. 5-6. 0 and Re=500, 2000, 104.The objective of this study is to investigate the flow structure and force feature. At smallKC number, only the Stokes layer occurs and the thickness of the Stokes layer becomesthinner with increasing Re. At higher KC value, vortex shedding appears and the vorticesshed from the cylinder interact further with the boundary layer formed on the plane. Additionany, the influence of KC and Re on the force behavior is also discussed-
Oscillating flow over a half circular cylinder on a plane is studied numerically by solving the two-dimensional incompressible Navier-Stokes equations using then-staggered-grid, fractional step method for KC = 0. 5-6. 0 and Re = 500, 2000 At small KC number, only the Stokes layer occurs and the thickness of the Stokes layer become sthinner with increasing Re. At higher KC value, vortex shedding appears and the vorticesshed from the cylinder interact further with the boundary layer formed on the plane. Additionany, the influence of KC and Re on the force behavior is also discussed-