Heat and mass transfer in evaporating turbulent drop-laden flow

摘要

This work deals with the computational modelling of the mass transition of evaporating liquid drop-laden gas flows. In the present study the evaporation model due to Abramzon and Sirignano (1989) has been extended by introducing an additional transport equation for a newly defined quantity a, defined as the phase-interface surface fraction. This allows the change in the drop diameter to be quantified in terms of a probability density function. The source term in the equation describing the dynamics of the volumetric fraction of the dispersed phase a~D is related to the evaporation time scale T_r.