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Boundary condition for systems of hyperbolic conservation laws. (Condition à la limite pour un système de lois de conservation.) (French) Zbl 0634.35046
We propose a formulation of the boundary condition for non linear hyperbolic systems of conservation laws. It is based on the notion of Riemann problem and leads to a “well posed” problem. The equivalence with classical formulations is established for both linear and non convex scalar cases. The study of isentropic Euler equations gives a non trivial example which is graphically detailed.

35L65 Hyperbolic conservation laws
35L50 Initial-boundary value problems for first-order hyperbolic systems
35A05 General existence and uniqueness theorems (PDE) (MSC2000)