This paper is devoted to the compactness framework and the convergence theorem for the Lax– Friedrichs and Godunov schemes applied to a 2 × 2 system of non-strictly hyperbolic nonlinear conservation laws that arises from mathematical models for oil recovery. The presence of a degeneracy in the hyperbolicity of the system requires a careful analysis of the entropy functions, whose regularity is necessary to obtain the result. For this purpose, it is necessary to combine the classical techniques referring to a singular Euler– Poisson–Darboux equation with the compensated compactness method.
|Titolo:||Convergence of Lax–Friedrichs and Godunov schemes for a nonstrictly hyperbolic system of conservation laws arising in oil recovery|
|Autori interni:||SAMPALMIERI, ROSELLA COLOMBA|
|Data di pubblicazione:||2016|
|Rivista:||CONTINUUM MECHANICS AND THERMODYNAMICS|
|Appare nelle tipologie:||1.1 Articolo in rivista|