A seven-equation diffused interface method for resolved multiphase flows

The seven-equation model is a compressible multiphase formulation that allows for phasic velocity and pressure disequilibrium. These equations are solved using diffused interface method models resolved flows. Novel extensions proposed including the effects of surface tension, viscosity, multi-species, reactions. allowed non-equilibrium in provides numerical stability strong shocks arbitrary independent states. Whereas, to be useful even unresolved particles where finite-rate relaxation observed. A discrete (DEM) fluxes. We show though stiff pressure- velocity-relaxation solvers have been used, they not necessarily needed all tests with DEM because non-conservative fluxes accurately modeled. An compression scheme controls diffusion interface, its on solution discussed. Test cases used validate computational demonstrate applicability. They include shock tubes, propagation through material dispersed particle curtain, surface-tension-driven oscillating droplet, an accelerating droplet viscous medium, shock–detonation interacting deforming droplet. Simulation results compared against exact solutions experiments when possible.