Turbulence modulation for gas - particle flow in vertical tube and horizontal channel using four-way Eulerian-Lagrangian approach

摘要: Abstract Turbulence modulation of gas–solid flow in vertical tube and horizontal channel dilute moderately dense suspensions is investigated numerically using a four way Eulerian–Lagrangian approach. Low Reynolds number k–l model used for analyzing the fluid phase motion. A new presented based on source-term formulation, which can predict turbulence augmentation due to presence large particles damping small core tube. Particle–particle particle–wall collisions are simulated deterministic approach, coupling terms representing fluid–particle interactions also taken into account. The predicted mean velocity intensity profiles good agreement with available experimental data. Additional numerical simulation results variation eddy viscosity, production dissipation different values loading ratios.