Abstract
We present a model for pure fuel droplet evaporation at high pressure with natural convection. The method uses film theory, in which heat and mass transfer between droplet surface and ambient gas happens in a thin film around the droplet. In addition, to take natural convection into account, we write and resolve, first of all, local equations in the limit gas phase around a porous sphere. With this computation, we estimate the mean Nusselt and Sherwood numbers in terms of mass and thermal Grashof numbers. In the first section of this paper, we present the numerical method and the correlation obtained taking natural convection into account. In the last sectionr, we present a comparison between our numerical results and the experimental and numerical results in the literature. (Author)