Richtmyer-Meshkov Instability for a gas and a liquid

A shock tube has the length 4.0 and the height 1.0. The interface now separates air (density 1.0) at the left side and water (treated as a gas with density 7.1 using a "stiffened" gas equation). Across the interface the pressure is 1.0, while the shock now propagates leftwards starting at x=1.325. The pressure behind the shock is 10.0.

7 computing nodes are used. The resolution at the finest level is 2560 x 640.