Abstract: Compressible two-fluid inviscid flow is computed by the Ghost Fluid method with Isobaric fix.The method can avoid numerical oscillation and smearing as is encountered with a shock-capturing scheme in computing fluid interface,and it is simpler to code than fronttracking techniques.The system of the Euler equations which describes the fluid flow and the level set equation which describes the interface motion is solved by high-resolution WENO finite difference scheme.Satisfatory results are obtained for several 1D and 2D compressible two-fluid flows subject to the stiffened equation of state.

Key words: Level Set method, Ghost Fluid method, Isobaric fix, two-fluid flow