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The relaxation schemes for systems of conservation laws in arbitrary space dimensions
Author(s) -
Jin Shi,
Xin Zhouping
Publication year - 1995
Publication title -
communications on pure and applied mathematics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.12
H-Index - 115
eISSN - 1097-0312
pISSN - 0010-3640
DOI - 10.1002/cpa.3160480303
Subject(s) - conservation law , mathematics , dissipative system , scalar (mathematics) , nonlinear system , total variation diminishing , relaxation (psychology) , riemann problem , riemann hypothesis , numerical analysis , limit (mathematics) , algebraic number , space (punctuation) , mathematical analysis , geometry , physics , computer science , psychology , social psychology , quantum mechanics , operating system
We present a class of numerical schemes (called the relaxation schemes) for systems of conservation laws in several space dimensions. The idea is to use a local relaxation approximation. We construct a linear hyperbolic system with a stiff lower order term that approximates the original system with a small dissipative correction. The new system can be solved by underresolved stable numerical discretizations without using either Riemann solvers spatially or a nonlinear system of algebraic equations solvers temporally. Numerical results for 1‐D and 2‐D problems are presented. The second‐order schemes are shown to be total variation diminishing (TVD) in the zero relaxation limit for scalar equations. ©1995 John Wiley & Sons, Inc.