Excellence in Research and Innovation for Humanity

David J Robbins

Publications

1

Publications

1
9729
Simulation of Multiphase Flows Using a Modified Upwind-Splitting Scheme
Abstract:

A robust AUSM+ upwind discretisation scheme has been developed to simulate multiphase flow using consistent spatial discretisation schemes and a modified low-Mach number diffusion term. The impact of the selection of an interfacial pressure model has also been investigated. Three representative test cases have been simulated to evaluate the accuracy of the commonly-used stiffenedgas equation of state with respect to the IAPWS-IF97 equation of state for water. The algorithm demonstrates a combination of robustness and accuracy over a range of flow conditions, with the stiffened-gas equation tending to overestimate liquid temperature and density profiles.

Keywords:
Multiphase flow, AUSM+ scheme, liquid EOS, low Mach number models