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A left moving shock wave propagates first through the stiffened gas before it hits a stationary bubble, which gains speed and loss its circular shape. After the shock wave hits the bubble, circular pressure waves are created, while a pair of vortices appears on the tail of the bubble, increasing the pattern complexity of the interface. This example is a classic multiphase flow example [1], here we use it to test our two-phase multiphase flow solver. 


[1] G. Allaire, S. Clerc, S. Kokh,  A five-equation model for the simulation of interfaces between compressible fluids,  J. Comput. Phys. 181(2) (2002) 577-616