CFD studies on mass transfer of gas-to-particle cluster in a circulating fluidized bed

摘要: Abstract Mass transfer of air to naphthalene particle cluster in a circulating fluidized bed (CFB) is investigated via computational fluid dynamic (CFD) approach. Distributions vapor concentration and velocity the spherical are numerically predicted. The computed results indicate that mass particles reduced due clustering increments size temperature. Influences porosity cluster, inlet gas temperature on analyzed. coefficients increase with velocity, but decrease diameter. down-moving gives higher than upward moving cluster. Sherwood numbers compared estimated values from empirical equations reported literature.