التفاصيل البيبلوغرافية
| العنوان: |
Multigrid preconditioning for time-periodic Navier-Stokes problems. |
| المؤلفون: |
Hupp, Daniel, Obrist, Dominik, Arbenz, Peter |
| المصدر: |
PAMM: Proceedings in Applied Mathematics & Mechanics; Oct2015, Vol. 15 Issue 1, p595-596, 2p |
| مصطلحات موضوعية: |
NUMERICAL solutions to Navier-Stokes equations, MULTIGRID methods (Numerical analysis), FOURIER series, COEFFICIENTS (Statistics), DISCRETE Fourier transforms, PICARD number, NONLINEAR equations |
| مستخلص: |
We propose to solve time-periodic Navier-Stokes problems by a discrete Fourier transform in time. Truncating the Fourier series yields a nonlinear system of equations for the unknown Fourier coefficients. Its solution by Picard iteration requires to solve a sequence of linear systems of equations. The focus of this work is on an efficient method to solve these linear systems. We employ GMRES, complemented by an optimal block triangular preconditioner. (© 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) [ABSTRACT FROM AUTHOR] |
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