Article
Summary:
Weak solutions of given problems are sometimes not necessarily unique. Relevant solutions are then picked out of the set of weak solutions by so-called entropy conditions. Connections between the original and the numerical entropy condition were often discussed in the particular case of scalar conservation laws, and also a general theory was presented in the literature for general scalar problems. The entropy conditions were realized by certain inequalities not generalizable to systems of equations in a trivial way. It is a concern of this article to extend the theory in such a way that inequalities can be replaced by general relations, and this not only in an abstract way but also realized by examples.
References:
[1] A. Harten, J. M. Heyman and P. D. Lax:
On finite-difference approximations and entropy conditions for shocks. Comm. Pure Appl. Math. 29 (1976), 297–322.
DOI 10.1002/cpa.3160290305 |
MR 0413526
[3] R. Ansorge, J. Lei:
The convergence of discretization methods if applied to weakly formulated problems. Theory and applications. Z. Angew. Math. Mech. 71 (1991), 207–221.
DOI 10.1002/zamm.19910710702 |
MR 1121485
[6] M. G. Crandall, A. Majda:
Monotone difference approximations and entropy conditions for shocks. Math. Comp. 34 (1980), 1–21.
MR 0551288
[7] S. N. Kruzhkov:
Generalized solutions of the Cauchy problem in the large for nonlinear equations of first order. Soviet Math. Dokl. 10 (1969), 785–788.
Zbl 0202.37701
[9] D. Kröner:
Numerical Schemes for Conservation Laws. Wiley-Teubner, Chichester, Stuttgart, 1997.
MR 1437144