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

LING Guo-ping; FANG Jian-wen

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Article Navigation > Applied Mathematics and Mechanics > 2002 > 23(9): 968-974

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.

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

Department of Mathematics, Suzhou University, Suzhou 215006, P. R. China

Received Date: 2001-01-13
Rev Recd Date: 2002-05-28
Publish Date: 2002-09-15

Abstract

Abstract

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.

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References(6)

References

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