ISSN Online: 2379-1748
8th Thermal and Fluids Engineering Conference (TFEC)
ON FROST FORMATION AND HEAT TRANSFER IN TURBULENT MOIST AIR FLOW USING DIRECT NUMERICAL SIMULATIONS
摘要
In this paper, we use a recently-developed physics-based model to study frost formation over a flat plate subjected to turbulent moist air flow. We find that the Nusselt and Sherwood numbers, when scaled by the frost surface to free stream temperature and humidity ratio difference, respectively, become independent of free-stream temperature and humidity ratio as well as plate temperature. For an initial shear Reynolds number of Re = 180, we find the heat and mass transfer rates to be enhanced by a factor of three compared to laminar flow conditions.