A pressure-based diffuse interface method for low-Mach multiphase flows with mass transfer

This study presents a novel pressure-based methodology for the efficient numerical solution of four-equation two-phase diffuse interface model. The proposed has potential to simulate low-Mach flows with mass transfer. In contrast classical conservative model formulation, adopted set equations features volume fraction, temperature, velocity and pressure as primary variables. includes effects viscosity, surface tension, thermal conductivity gravity, ability incorporate complex state. Additionally, Gibbs free energy relaxation procedure is used A key characteristic use high performance scalable solvers Helmholtz equation pressure, which drastically reduces computational cost compared analogous density-based approaches. We demonstrate capabilities large density viscosity ratios through extended verification against range different test cases. Finally, tackle challenging phase change demonstrated simulation three-dimensional nucleate boiling.