A Study on the Fluid Flow Around an Oscillating Circular Cylinder

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J. Ocean Eng. Technol. 1990;4(2):73-84.

Suh Yong-Kweon,Mun Jong-Chun

진동하는 원주 주위의 유체 유동에 관한 연구

서용권,문종춘

동아대학교 기계공학과,동아대학교 기계공학과

Keywords: Oscillating Circular Cylinder, Runge Kutta Method, SOR Method, Vortex Shedding

핵심용어: 진동원주, Runge Kutta 방법, SOR 방법, 보오텍스 셰딩

Abstract

A circular cylinder is oscillated in th otherwise quiescent viscous fluid. Numerical analysis performed for this problem by using the fourth-order Runge-kutta method for the unsteady Navier-stokes equations. For K(Kelegan-Carpenter's No.)=5, the flow developed symmetrically, while for K=10, it revealed random patterns. The coefficient of the rms force is overestimated by 20-30% compared with the experimental result.

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