다중 격자 기법을 위한 예조건화된 다단계 시간전진 기법Preconditioned Multistage Time Stepping for the Miltigrid Method

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In this paper, the preconditioned multistage time stepping methods which are the popular multigrid smoothers are 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 turned out that the block-Jacobi preconditioner has better performance in eigenvalue clustering. They are implemented in the 2-D compressible Euler and Navier-Stokes calculations with multigrid methods to verify that the block-Jacobi preconditioned multistage time stepping shows better performance in convergence.
Publisher
한국항공우주학회
Issue Date
2001-12
Language
Korean
Citation

한국항공우주학회지, v.29, no.8, pp.7 - 17

ISSN
1225-1348
URI
http://hdl.handle.net/10203/10010
Appears in Collection
AE-Journal Papers(저널논문)
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