A hybrid, mesoscale method for high-fidelity turbulent multiphase flows

Simulation of flows that include both small bubble nuclei and large, gaseous regions is challenging due to the disperse length scales. Unfortunately, such flows are perverse in application. I formulated a subgrid-bubble homogeneous-mixture hybrid model to address this problem; it recovers the 5-equation model in the fully-resolved-bubble limit and the ensemble phase-averaged flow equations when the bubbles are much smaller than the grid. Otherwise, source terms are implemented to switch between either modeling effort.

 

This work is currently under preparation for peer review