Numerical Simulation on Laminar Flow past a Rotating Circular Cylinder

J. Ocean Eng. Technol. 2005;19(3):1-10.

Park Jong-Chun,Moon Jin-Kook,Yoon Hyun-Sik,Lee Byung-Hyuk,Chun Ho-Hwan,Suh Sung-Bu

Department of Naval Architecture and Ocean Engineering Pusan National University,Department of Naval Architecture and Ocean Engineering Pusan National University,Department of Naval Architecture and Ocean Engineering Pusan National University,Depart

회전하는 원형 실린더 주위 층류유동장의 수치 시뮬레이션

박종천,문진국,윤현식,이병혁,전호환,서성부

부산대학교 조선해양공학과,부산대학교 조선해양공학과,부산대학교 조선해양공학과,부산대학교 조선해양공학과,부산대학교 조선해양공학과,중소조선기술연구원

Keywords: Rotating Circular Cylinder, Vortex Shedding, Laminar Flow, Statistics on a Cylinder Surface, Magnus Effect, CFD

핵심용어: 회전하는 원형 실린더, 와류 흘림, 층류 유동, 원형 실린더 표면에서의 통계량, 마그누스 효과, 전산유체역학

Abstract

The effect of rotation on the unsteady laminar flaw past a circular cylinder is numerically investigated in the present study. The numerical solutions for the 2D Navier-Stokes equation obtained, using two different numerical methods. One is an accurate spectral method and the other is a finite volume method(FVM). First, the flaw around a stationary circular cylinder is investigated to understand the basic phenomenon of flaw separation and bluff body wake. Next, the flow characteristics of the laminar flow, past a rotating circular cylinder, are investigated, using a FVM developed in this study. By the effect of rotation, it is seen that values of lift increase, while the values of mean drag decrease. Further, the criteria of angular velocity, at which the Karman vorteces disappear, is also determined.