Computational Prediction of Turbulence Modification in Gas-Solid Two-Phase Flows

This investigation is concerned with developing a model of the processes involved in turbulence modification in dilute gas-solid turbulent flows. The underlying formulation scheme employs an Eulerian-Lagrangian reference frame, i.e. the carrier phase is considered as a continuum system, while the trajectories of individual particles are calculated using a Lagrangian frame work. A random walk model is used to solve the particle motion equation. The proposed model, along with turbulence modulation models from the literature, is used to simulate a particle-laden vertical pipe flow. The simulation results show that the new model provides improved predictions of the experimental data.