Multiphase Turbulent Reaction Flow

by Zhenzhen Guan, Kai Huang, Zhuoxiong Zeng

This book deals mainly with multiphase turbulent reacting flow. The two-scale two-phase turbulence models (including second-order moment model and nonlinear k-epsilon model) are established for simulating dense gas-particle flow. A new turbulence enhancement model by particle wake effect is proposed on numerical results. The USM model of non-Newtonian fluid for dense two-phase turbulent flow is developed, which combines the unified second-order moment model for two-phase turbulence with the particle kinetic theory for the inter-particle collision. Gas-particle k-equation subgrid-scale (SGS) turbulence model is established which take into account the effect of gas-particle interaction. Flow structures and combustion for different vortex combustor are analyzed, such as advanced vortex combustor, trapped vortex combustor, swirl combustor and vortex cooling combustor, the coupling mechanism of flow, combustion as well as heat and mass transfer is obtained to reveal the combustion stabilization mechanism of different burners.