한국전산유체공학회:학술대회논문집
- 한국전산유체공학회 2001년도 춘계 학술대회논문집
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- Pages.127-133
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- 2001
다중 격자 기법을 위한 예조건화된 다단계 시간 전진 기법
Preconditioned Multistage Time Stepping for the Multigrid Method
- 발행 : 2001.05.01
초록
In this paper, the preconditioned multistage time stepping methods which are popular multigrid smoothers is studied for the compressible flow calculations. Fourier analysis on the local time stepping and block-Jacobi preconditioned residual operators is performed using the linearized 2-D Navier-Stokes equations. It fumed out that block-Jacobi preconditioner has better performance in eigenvalue clustering. They are implemented in the 2-D compressible Euler and Wavier-Stokes calculations with multigrid methods to verify that the block-Jacobi preconditioned multistage time stepping shows better performance in convergence acceleration.
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