Comparison of Various Models for Dilute Turbulent Gas-Particle Flow with Inelastic Collisions and Turbulence Modulation

This work compares various closure models for the interaction/coupling terms, particle drag and solid stress for a dilute turbulent gas-particle flow with inelastic collisions and turbulence modulation in a Eulerian framework. The models are evaluated with benchmark experimental results of a fully developed turbulent gas-solid flow in a vertical pipe. Further, a new interpretation is provided for the interaction term which helps enhancing the understanding of these terms and also provides for a new robust model with the ability to predict turbulence enhancement and dampening phenomena.