Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
권호 표지

LARGE EDDY SIMULATION OF TURBULENT CHANNEL FLOW AT $Re_{\tau}=180$ USING VARIATIONAL MULTISCALE METHOD

변분다중스케일법을 이용한 $Re_{\tau}=180$ 채널 난류 유동의 대와류모사

  • 장경식 (울산대학교 조선해양공학과) ;
  • 이보현 (울산대학교 대학원 조선해양공학과) ;
  • 윤범상 (울산대학교 조선해양공학과) ;
  • 이주성 (울산대학교 조선해양공학과) ;
  • 노명일 (울산대학교 조선해양공학과)
  • Received : 2010.03.12
  • Accepted : 2010.05.14
  • Published : 2010.06.30
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Abstract

In the present work, LES with new variational multiscale method is conducted on the fully developed channel flow with Reynolds number, 180 based on the friction velocity and the channel half width. Incompressible Navier-Stokes equations are integrated using finite element method with the basis function of NURBS. To solve space-time equations, Newton's method with two stage predictor multicorrector algorithm is employed. The code is parallelized using MPI. The computational domain is a rectangular box of size $2{\pi}{\times}2{\times}4/3{\pi}$ in the streamwise, wall normal and spanwise direction. Mean velocity profiles and velocity fluctuations are compared with the data of DNS. The results agree well with those of DNS and other traditional LES.

Keywords

References

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