Heat and mass transfer with condensation in laminar and turbulent boundary layers along a flat plate

Abstract

An experimental and numerical study of heat and mass transfer in an incompressible boundary layer with condensation over a flat plate is presented. The air-steam flow at atmospheric pressure is saturated; its velocity is smaller than 6 m s-1; the Reynolds number calculated with the abscissa along the plate ranges from 104 to 105 for the laminar boundary layer and from 3 × 105 to 106 for the turbulent one. The temperature différence between the main flow and the cold wall does not exceed 20°C. A finite-difference method is used to calculate the velocity, temperature and concentration fields; the numerical results are in good agreement with experiments for laminar and turbulent boundary layer. © 1986.