Journal
JOURNAL OF COMPUTATIONAL PHYSICS
Volume 231, Issue 6, Pages 2498-2509Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcp.2011.11.042
Keywords
Pseudospectral penalty method; Poisson equations; Diagonalization
Funding
- National Science Council of Taiwan [NSC-99-2115-M-009-012-MY3, NSC-100-2115-M-035-001, NSC-100-2632-E-035-001-MY3, NSC-99-2811-M-009-047]
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This paper presents a direct Poisson solver based on an error minimized Chebyshev pseudospectral penalty formulation for problems defined on rectangular domains. In this study the penalty parameters are determined analytically such that the discrete L-2 error is minimized. Numerical experiments are conducted and the results show that the penalty scheme computes numerical solutions with better accuracy, compared to the traditional approach with boundary conditions enforced strongly. (C) 2011 Elsevier Inc. All rights reserved.
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