한국전산유체공학회:학술대회논문집

한국전산유체공학회 (Korean Society of Computational Fluids Engineering)
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다중 격자 Navier-Stokes 해석을 위한 예조건화된 다단계 시간 전진 기법

Preconditioned Multistage time stepping for the Multigrid Navier-Stokes Solver

  • 김윤식 (한국과학기술원 항공우주공학전공 대학원) ;
  • 권장혁 (한국과학기술원 항공우주공학전공) ;
  • 최윤호 (아주대학교 기계 및 산업공학부) ;
  • 이승수 (국방과학연구소)
  • 발행 : 2002.05.01
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초록

In this paper, the preconditioned multistage time stepping methods which are popular multigrid smoothers is implemented for the compressible Navier-Stokes calculation with full-coarsening multigrid method. The convergence characteristic of the point-Jacobi and Alternating direction line Jacobi(DDADI) preconditioners are studied. The performance of 2nd order upwind numerical fluxes such as 2nd order upwind TVD scheme and MUSCL-type linear reconstruction scheme are compared in the inviscid and viscous turbulent flow caculations.

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