A Well-Balanced Scheme for the Numerical Processing of Source Terms in Hyperbolic Equations

1996/02/01 by J. M. Greenberg, A. Y. Leroux, Alain Leroux · 671 citations
Engineering · Mathematics · #Applied mathematics #Computational Fluid Dynamics and Aerodynamics #Conservation law #Convergence (economics) #Entropy (arrow of time) #Fluid Dynamics and Turbulent Flows #Geometry #Hyperbolic partial differential equation #Limit (mathematics) #Mathematical analysis #Mathematics #Navier-Stokes equation solutions #Numerical analysis #Partial differential equation #Physics #Scalar (mathematics) #Scheme (mathematics) #Shallow water equations

paper · doi:10.1137/0733001

published in SIAM Journal on Numerical Analysis 33(1), 1-16 (Society for Industrial and Applied Mathematics)

openalex publication_date 1996/02/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/26

Abstract

In a variety of physical problems one encounters source terms that are balanced by internal forces and this balance supports multiple steady state solutions that are stable. Typical of these are gravity-driven flows such as those described by the shallow water equations over a nonuniform ocean bottom. (1.10) h_t + (hu)_x = 0 and (hu)_t + ( hu² + \fracgh² 2 )_x + ga_x (x)h = 0; Many classic numerical schemes cannot maintain these steady solutions or achieve them in the long time limit with an acceptable level of accuracy because they do not preserve the proper balance between the source terms and internal forces. We propose here a numerical scheme, adapted to a scalar conservation law, that preserves this balance and that can, it is hoped, be extended to more general hyperbolic systems. The proof of convergence of this scheme toward the entropy solution is given and some numerical tests are reported.

Citations

• Hyperbolic systems of conservation laws II

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