REVIEWS ON LARGE EDDY SIMULATION AND DIRECT NUMERICAL SIMULATION OF PARTICLE-LADEN DILUTE TWO-PHASE TURBUELNT FLOWS

Recently, with the development of high performance computation technology, large eddy simulation and direct numerical simulation have already become one of the most important approaches in study of two-phase inter-phase interaction mechanisms. Numerical simulation based on mass point particle trajectory model and multi-way coupling model is mainly used to explore the particle dispersion by turbulence and turbulence modulation by particles. Particle fully-resolved direct numerical simulation provides more information of particle phase-vortex structures in particle wakes, which contains complete mechanisms due to the existence of finite-size particles. Focused on three basic flow prototypes, recent investigations on particle-laden turbulence mechanisms by means of large eddy simulation, direct numerical simulation and particle fully-resolved direct numerical simulation are reviewed in this paper.