CFD simulation on hydrodynamics in fluidized beds: assessment of gradient approximations and turbulence models

摘要

CFD simulations of gas–solid fluidized beds have been performed in Euler–Euler framework. Green-Gauss Cell Based gradient approximation can predict the solid velocity well among gradient approximations. The dispersed choice in the turbulence model can reproduce the solid velocity correctly while the mixture and per phase choices cannot. The standard k–ε model, RNG k–ε model and SST k–ω model with the dispersed choice can predict the solid velocity well.