A vertex-centered finite volume method with interface sharpening technique for compressible two-phase flows

A robust and efficient finite volume method with interface sharpening technique has been developed to solve the six-equation multi-fluid single-pressure model for compressible two-phase flows. The numerical is implemented in a three-dimensional vertex-centered code. least-squares reconstruction Kuzmin's vertex-based (VB) limiter fraction set of primitive variables presented framework. In regions where two different fluid components are present within cell, based on THINC (Tangent Hyperbola Interface Capturing) adopted provide sharp resolution transitioning interface. These reconstructed values then used as initial data Riemann problems. enhanced AUSM+ -up scheme applied both liquid gas multi-stage Runge-Kutta time marching. number benchmark test cases assess performance method. include: an air-water moving at constant velocity, Ransom's faucet problem, air-water/water-air shock tube problems high pressure ratios, air impacting water column case, underwater explosion case bubble blast case. all these cases, rarefaction waves captured accurately, especially technique. • single Tangent implemented. show accuracy results this paper good comparison literature.