Acta mathematica scientia,Series B ›› 1989, Vol. 9 ›› Issue (1): 33-42.

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LARGE TIME STEP GENERALIZATION OF RANDOM CHOICE FINITE DIFFERENCE SCHEME FOR HYPERBOLIC CONSERVATION LAWS

Wang Jinghua   

  1. Inst. of Syst. Sci., Academia Sinica, Beijing, China
  • Received:1987-05-28 Online:1989-03-25 Published:1989-03-25
  • Supported by:
    The Project Supported by National Natural Science Foundation of China.

Abstract: A natural generalization of random choice finite difference scheme of Harten and Lax for Courant number larger than 1 is obtained. We handle interactions between neighboring Riemann solvers by linear superposition of their conserved quantities. We show consistency of the scheme for arbitrarily large Courant numbers. For scalar problems the scheme is total variation diminishing.A brief discussion is given for entropy condition.

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