Systems of mixed hyperbolic-elliptic conservation laws can serve as models for the evolution of a liquid-vapor fluid with possible sharp dynamical phase changes. We focus on the equations of ideal hydrodynamics in the isothermal case and introduce a thermodynamically consistent solution of the Riemann problem in one space dimension. This result is the basis for an algorithm of ghost fluid type to solve the sharp-interface model numerically. In particular the approach allows to resolve phase transitions sharply, i.e., without artificial smearing in the physically irrelevant elliptic region. Numerical experiments demonstrate the reliability of the method.
@article{M2AN_2007__41_6_1089_0,
author = {Merkle, Christian and Rohde, Christian},
title = {The sharp-interface approach for fluids with phase change : Riemann problems and ghost fluid techniques},
journal = {ESAIM: Mathematical Modelling and Numerical Analysis - Mod\'elisation Math\'ematique et Analyse Num\'erique},
volume = {41},
year = {2007},
pages = {1089-1123},
doi = {10.1051/m2an:2007048},
mrnumber = {2377108},
zbl = {1134.35074},
language = {en},
url = {http://dml.mathdoc.fr/item/M2AN_2007__41_6_1089_0}
}
Merkle, Christian; Rohde, Christian. The sharp-interface approach for fluids with phase change : Riemann problems and ghost fluid techniques. ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique, Tome 41 (2007) pp. 1089-1123. doi : 10.1051/m2an:2007048. http://gdmltest.u-ga.fr/item/M2AN_2007__41_6_1089_0/
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