제목(국문) | 변분다중스케일법을 이용한 ReT = 180 채널 난류 유동의 대와류 묘사 |
---|---|
제목(영문) | LARGE EDDY SIMULATION OF TURBULENT CHANNEL FLOW AT ReT = 180 USING VARJATIONAL MULTISCALE METHOD |
저자 |
장경식
(K. Chang
,울산대학교 조선해양공학과
)
▷공저자 네트워크 보기
이보현 (B.H. Lee ,울산대학교 대학원 조선해양공학과 ) ▷공저자네트워크등록하기 윤범상 (B.S. Yoon ,울산대학교 조선해양공학과 ) ▷공저자네트워크등록하기 이주성 (J.S, Lee ,울산대학교 조선해양공학과 ) ▷공저자네트워크등록하기 노명일 (M.l. Roh ,울산대학교 조선해양공학과 ) ▷공저자네트워크등록하기 |
초록 | 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 2πx2x4/3π 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. |
keyword | Variational Multiscale Method(변중다중스케일법), lsogeometric Analysis(등기하가), Channel Flow(채널유동) |
저널명 | 한국전산유체공학회지 ▷관련저널보기 |
VOL | 15 |
PAGE | 35-40 |
발표년도 | 2010 |
원문파일 |
![]() |