#### 비정상 RAMS 계산을 위한 내재적 분리 방법An implicit decoupling method for unsteady RANS computation

Cited 0 time in Cited 0 time in
• Hit : 275
A new efficient numerical method for computing unsteady, incompressible flows, DRANS (Decoupled Reynolds-Averaged Navier-Stokes), is presented. To eliminate the restriction of CFL condition, a fully-implicit time advancement in which the Crank-Nicolson method is used fer both the diffusion and convection terms. is adopted. Based on decomposition method, the velocity-turbulent quantity decoupling is achieved. The additional decoupling of the intermediate velocity components in the convection term is made for the fully-implicit time advancement scheme. Since the iterative procedures for the momentum, ${\kappa}\;and\;{\varepsilon}$ equations are not required, the components decouplings bring fourth the reduction of computational cost. The second-order accuracy in time of the present numerical algorithm is ascertained by computing decaying vortices. The present decoupling method is applied to turbulent boundary layer with local forcing.
Publisher
대한기계학회
Issue Date
2000
Language
KOR
Citation

대한기계학회 2000년 춘계학술대회, pp.704 - 708

URI
http://hdl.handle.net/10203/137356
Appears in Collection
ME-Conference Papers(학술회의논문)
Files in This Item
There are no files associated with this item.