Modeling of heat and mass transfer processes in phase transformation cycle of sprayed water into gas: 2. Peculiarities of a droplet cycle that is heating by convection

Abstract

Heat and mass transfer mathematical model of droplet slipping in humid air was provided, its solution algorithm was discussed and numerical scheme of iterative solution for a droplet transfer parameters calculation was created. Water droplet convective heating cases are defined by initial conditions T_g=500 K, w_g=10 m/s, p=0.1 MPa, p_v,∞/p=0.3, T₀=278 K and 2R₀=150∙10^-6m, when Reynolds number is 0, 20 and 50. A droplet phase transformation cycle expressed by Fourier time scale was modelled. It was based on, that in unsteady phase transformation mode a heat transfer conditions has essential influence for a droplet thermal and energy states consistent pattern change at phase transformation cycle.

DOI: http://dx.doi.org/10.5755/j01.mech.21.2.9774