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Monotone (A,B) entropy stable numerical scheme for ScalarConservation Laws with discontinuous flux

Published online by Cambridge University Press:  26 September 2014

Adimurthi
Affiliation:
TIFR-CAM, PB 6503, Sharadanagar, 560065 Bangalore, India.. aditi@math.tifrbng.res.in; rajib@math.tifrbng.res.in; gowda@math.tifrbng.res.in
Rajib Dutta
Affiliation:
TIFR-CAM, PB 6503, Sharadanagar, 560065 Bangalore, India.. aditi@math.tifrbng.res.in; rajib@math.tifrbng.res.in; gowda@math.tifrbng.res.in
G. D. Veerappa Gowda
Affiliation:
TIFR-CAM, PB 6503, Sharadanagar, 560065 Bangalore, India.. aditi@math.tifrbng.res.in; rajib@math.tifrbng.res.in; gowda@math.tifrbng.res.in
Jérôme Jaffré
Affiliation:
INRIA, BP 105, 78153 Le Chesnay Cedex, France.; jerome.jaffre@inria.fr

Abstract

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For scalar conservation laws in one space dimension with a flux function discontinuous inspace, there exist infinitely many classes of solutions which are L1 contractive.Each class is characterized by a connection (A,B) which determines the interface entropy. Forsolutions corresponding to a connection (A,B), there exists convergent numerical schemesbased on Godunov or Engquist−Osher schemes. The natural question is how to obtain schemes,corresponding to computationally less expensive monotone schemes like Lax−Friedrichs etc., usedwidely in applications. In this paper we completely answer this question for more general(A,B)stable monotone schemes using a novel construction of interface flux function. Then fromthe singular mapping technique of Temple and chain estimate of Adimurthi and Gowda, weprove the convergence of the schemes.

Information

Type
Research Article
Copyright
© EDP Sciences, SMAI, 2014