진동하는 원형주상체 주위의 와류 수치 모사

Numerical Simulation of the Vortical flow around an Oscillating Circular Cylinder

  • 김광수 (서울대학교 조선해양공학과) ;
  • 이승재 (서울대학교 조선해양공학과) ;
  • 서정천 (서울대학교 조선해양공학과/해양시스템공학연구소)
  • 발행 : 2003.04.01


The phenomena of vortex shedding around a cylinder oscillating harmonically in a fluid at rest are investigated by a two-dimensional numerical simulation of the Navier-Stokes equations. The simulation is based on a vorticity-velocity integro-differential formulation dealing with vorticity, velocity and pressure variables. Three combinations of Reynolds number(Re) and Keulegan-Carpenter number(KC) were taken to investigate the associated vortex development around the cylinder in the different flow regimes. Drag and lift forces are computed to describe their dominant frequency modulation which is related to the vortex shedding and to the harmonic motion of the cylinder.



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피인용 문헌

  1. Flow Control and Drag Reduction of a Circular Cylinder by an External Magnetic Field vol.41, pp.2, 2004,