가상경계법을 사용한 횡단 진동하는 실린더 주위의 유동 해석
Immersed Boundary Method for Flow Induced by Transverse Oscillation of a Circular Cylinder in a Free-Stream
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Abstract
Numerical calculations are carried out for flow past a circular cylinder forced oscillating normal to the free-stream flow at a fixed Reynolds number equal to 185. The cylinder oscillation frequency ranged from 0.8 to 1.2 of the natural vortex-shedding frequency, and the oscillation amplitude extended up to 20% of the cylinder diameter. IBM (Immersed Boundary Method) with direct momentum forcing was adopted to handle both of a stationary and an oscillating cylinder. Present results such as time histories of drag and lift coefficients for both stationary and oscillating cases are in good agreement with previous numerical and experimental results. The instantaneous wake patterns of oscillating cylinder with different oscillating frequency ratios showed the synchronized wakes pattern in the lock-in region and vortex switching phenomenon at higher frequency ratio than the critical frequency ratio.
참고문헌 (19)
- "와도를 기저로 한 초기순간 출발하는 실린더 주위의 점성유동해석", 35(4), pp.1~10 (1998)
- "주기 회 전하는 원형 실린더 주위 층류 유동장의 수치 시뮬레이션", 42(4), pp.368~378 (2005)
- "자기장을 사용한 원형주상체 주위의 유동 제어 및 저항감소", 41(2), pp.70~78 (2004)
- "A Studyof Two-Dimensional Flow Past an Oscillating Cylinder", pp.255~286 (1999)
- "Numerical Study and Physical Analysis of the Pressure and Velocity Fields in the near Wake of a Circular Cylinder", pp.79~130 (1986)
- "On the Near-Wake Topology of an Oscillating Cylinder", 12, pp.215~220 (1998)
- "Modeling a No-Slip Flow Boundary with an External Force Field", pp.354~ (1993)
- "Timing of Vortex Formation from an Oscillating Cylinder", pp.3677~3682 (1994)
- "A Numerical Simulation of Vortex Shedding from an Oscillating Circular Cylinder", 16(6), pp.773~794 (2002)
- "The Vortex Street in the Wake of a Vibrating Cylinder", pp.31~48 (1972)
- "An Immersed-Boundary Finite-Volume Method for Simulations of flow in Complex Geometries", 171, pp.132~150 (2001)
- "Application of a Fractional-Step Method to Incompressible Navier-Stokes Equation", pp.308323~ (1985)
- "The Vortex Wakes of Vibrating Cylinders at Low Reynolds Numbers", pp.501~512 (1967)
- "Stability Characteristics of the Virtual Boundary Method in Three-Dimensional Applications", 184, pp.559~591 (2003)
- "Calculation of the Timing of Vortex Formation from an Oscillating Cylinder", 10, pp.527~541 (1996)
- "Direct Numerical Simulation of Flow Past Elliptic Cylinders", pp.351~367 (1994)
- "Combined Immersed-Boundary", B-Spline Methods for Simulations of Flow in Complex Geometries, 1997, 317~[DOI]
- "The Fluid Dynamics of Heart Valves", pp.235~ (1982), Peskin C.S.
- "Numerical Simulation of a Cylinder in Uniform Flow Application of a Virtual Boundary Method", 123, pp.450~465 (1996)