Constant entropy sampling and release waves of shock compressions.
We present or recall several equilibrium methods that allow one to compute isentropic processes, either during the compression or the release of the material. These methods are applied to compute the isentropic release of a shocked monoatomic liquid at high pressure and temperature. Moreover, equilibrium results of isentropic release are compared to the direct nonequilibrium simulation of the same process. We show that due to the viscosity of the liquid but also to nonequilibrium effects, the release of the system is not strictly isentropic.
Maillet
Jean-Bernard
JB
CEA, DAM, DIF, F-91297 Arpajon, France. jean-bernard.maillet@cea.fr
Bourasseau
Emeric
E
Soulard
Laurent
L
Clérouin
Jean
J
Stoltz
Gabriel
G