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Chebyshev-Legendre Spectral Domain Decomposition Method for Two-Dimensional Vorticity Equations

Published online by Cambridge University Press:  17 May 2016

Hua Wu*
Affiliation:
Department of Mathematics, Shanghai University, Shanghai 200444, P.R. China
Jiajia Pan
Affiliation:
Department of Mathematics, Shanghai University, Shanghai 200444, P.R. China
Haichuan Zheng
Affiliation:
Department of Mathematics, Shanghai University, Shanghai 200444, P.R. China
*
*Corresponding author. Email address:hwu@staff.shu.edu.cn(H. Wu)

Abstract

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We extend the Chebyshev-Legendre spectral method to multi-domain case for solving the two-dimensional vorticity equations. The schemes are formulated in Legendre-Galerkin method while the nonlinear term is collocated at Chebyshev-Gauss collocation points. We introduce proper basis functions in order that the matrix of algebraic system is sparse. The algorithm can be implemented efficiently and in parallel way. The numerical analysis results in the case of one-dimensional multi-domain are generalized to two-dimensional case. The stability and convergence of the method are proved. Numerical results are given.

Information

Type
Research Article
Copyright
Copyright © Global-Science Press 2016