LING Guo-ping, FANG Jian-wen. Numerical Study on the Flow Around a Circular Cylinder With Surface Suction or Blowing Using Vorticity-Velocity Method[J]. Applied Mathematics and Mechanics, 2002, 23(9): 968-974.
 Citation: LING Guo-ping, FANG Jian-wen. Numerical Study on the Flow Around a Circular Cylinder With Surface Suction or Blowing Using Vorticity-Velocity Method[J]. Applied Mathematics and Mechanics, 2002, 23(9): 968-974.

# Numerical Study on the Flow Around a Circular Cylinder With Surface Suction or Blowing Using Vorticity-Velocity Method

• Rev Recd Date: 2002-05-28
• Publish Date: 2002-09-15
• A vorticity-velocity method was used to study the incompressible viscous fluid flow around a circular cylinder with surface suction or blowing. The resulted high order implicit difference equations were effeciently solved by the modified incomplete LU decomposition conjugate gradient scheme (MILU-CG). The effects of surface suction or blowing's position and strength on the vortex structures in the cylinder wake, as well as on the drag and lift forces at Reynoldes number Re=100 were investigated numerically. The results show that the suction on the shoulder of the cylinder or the blowing on the rear of the cylinder can effeciently suppress the asymmetry of the vortex wake in the transverse direction and greatly reduce the lift force; the suction on the shoulder of the cylinder, when its strength is properly chosen, can reduce the drag force significantly, too.
•  [1] Williams C R,Mansy H,Amato C.The response of asymmetry properties of a cylinder wake subjected to localized surface excitation[J].J Fluid Mech,1992,234:71-96. [2] Lin J C,Towfighi J,Rockwell D.Near-wake of a circular cylinder:Control by steady and unsteady surface injection[J].J Fluids & Structures,1995,9(5):659-669. [3] Ling L M,Ramaswamy B,Cohen R D,et al.Numerical analysis on Strouhal frequencies in vortex shedding over square cylinders with surface suction and blowing[J].Internat J Numer Methods Heat Fluid Flow,1993,3(3):357-375. [4] Gatski T B.Review of incompressible fluid flow computations using the vorticity-velocity formulation[J].Appl Num Mathematics,1991,7(2):227-239. [5] YUAN Li,FU De-xun,MA Yan-wen.Numerical simulation of axisymmetric unsteady incompressible flow by a vorticity-velocity method[J].Internat J Numer Methods Fluids,1995,21(3):401-411. [6] LING Guo-ping,Shih T M.Numerical study on the vortex motion patterns around a rotating circular cylinder and their critical characters[J].Internat J Numer Methods Fluids,1999,29(2):229-248.

### Catalog

###### 通讯作者: 陈斌, bchen63@163.com
• 1.

沈阳化工大学材料科学与工程学院 沈阳 110142