이보현, 장경식, 윤범상, 노명일, 안윤남, 이주성, "변분 멀티 스케일법을 이용한 채널 난류 유동의 대와류 모사", 2009년도 한국해양공학회 추계학술발표회, 거제, pp. 381-384, 2009.10.22-23
Domestic Conference
2013.12.04 17:27
이보현, 장경식, 윤범상, 노명일, 안윤남, 이주성, "변분 멀티 스케일법을 이용한 채널 난류 유동의 대와류 모사", 2009년도 한국해양공학회 추계학술발표회, 거제, pp. 381-384, 2009.10.22-23
조회 수 9107
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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 is 180 based on the friction velocity and the channel half sidth, Finite element method with the basis fuction of NURMS is adopted to integrate incompressible Navier-Stokes equations Newton's method with two stage predictor multicorrector algorithm is emplyed. The code is parralleized using MPI. The computational domain is a rectangular box of size 2pi*2*4pi/3 in the streamwise, wall normal and spanwise direction. Mean velocity profiles and velocity fluctuations are compared sith the data of DNS. The reuslts agree weell with those of DNS and other traditional LES, Also turbulent flow structures are shown using isosurface of streamwise velocity and Q-critera, |
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| Publication Date | 2009-10-22 |
