Thermal State and Hydrodynamics of Evaporating Liquid Hydrocarbon Droplets. 1. A Possibility of Natural Circulation of the Liquid in the Droplet

Abstract

A-droplet surface area, m 2 ; a-thermal diffusivity, m 2 /s; B M-Spalding mass transfer number; B T-Spalding heat transfer number; c p-specific heat, J/(kgK); Fo-Fourier number; Gr-Grashof number; L-latent heat of evaporation, J/kg; l-characteristic dimension, m-vapour mass flux density, kg/(s. m 2); n-number of the term in infinite sum; q-heat flux density, W/m 2 ; p-pressure, Pa; R-radius of the droplet, m; r-coordinate of the droplet, m; Ra-Rayleigh number; Nu-Nusselt number; T-temperature, K; β-thermal volumetric expansion coefficient, K-1 ; η-droplets dimensionless coordinate; -thermal conductivity, W/(m K); ρ-density, kg/m 3 ; τ-time, s.