A robust high order framework for compressible multi-phase multi-component flows with interface regularization, phase change, and spray modeling

We present a framework for multi-phase multi-component flows with application to the injection stage of a rocket combustor. The high-order numerical framework is designed around positivity-preserving ENO-type schemes with models for capturing phase interfaces, interphase mass transfer, and sprays. Interface regularization based on the conservative diffuse interface (CDI) model is extended to multi-phase multi-component flows. A hybrid Euler-Lagrange spray atomization (ELSA) model is used to predict the unresolved surface area of the atomized spray. The surface area from the ELSA model is used to inform a finite-rate phase change model for evaporation critical to providing realistic ignition. The proposed models and numerical schemes are implemented in the highly-parallel Hypersonic Task- based Research (HTR) sSolver and high-fidelity simulations are performed using GPUs.