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Large Eddy Simulation of Turbulent flow around a Square Cylinder

대형 와 모사법 (LES)을 이용한 사각 실린더 주위의 난류 유동장 해석

  • Chun, Ho-Hwan (Advanced Ship Engineering Research Center, Pusan National University) ;
  • Jung, Kwang-Hyo (Advanced Ship Engineering Research Center, Pusan National University) ;
  • Yoon, Hyun-Sik (Advanced Ship Engineering Research Center, Pusan National University)
  • 전호환 (부산대학교 첨단조선공학연구센터) ;
  • 정광효 (부산대학교 첨단조선공학연구센터) ;
  • 윤현식 (부산대학교 첨단조선공학연구센터)
  • Published : 2006.12.20

Abstract

This study has investigated the turbulent flow around a square cylinder by using LES (large eddy simulation). Numerical simulations are performed for turbulent flow fields with Re = 22,000. The computed results are in good agreement with existing computational and experimental data. The time-averaged and phase-averaged turbulent statistics around a square cylinder are discussed. Total 20 phase bins extracted from one cycle period showed detailed wake structures of the phase-averaged flow field. The center of Karman vortex sheets did not deviated ${\pm}0.5$ from centerline of square cylinder while moving downstream.

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