Interaction of the Transient Heat and Mass Transfer Processes through Evaporation of Sprayed Liquid Droplets

摘要

Methods of combined analytical-numerical solution of the droplet problem, which includes internal heat exchange processes in semi-transparent droplet liquid and heat and mass transfer in the surrounding gas medium, are applied to modeling of combined transient heat and mass transfer of liquid droplets. Characteristic curves are obtained for conductive heating, that describe the variation of the thermal state of droplets and of phase change parameters with the help of the Fourier criterion. Departure from these characteristic curves allows evaluation of the influence exerted by boundary conditions of heat and mass transfer on heating and evaporation intensity under the conditions of combined heat supply. The results of numerical investigation are compared with the experimental results obtained by other authors.