Condensation of a chemically reactive gas on a horizontal tube

A numerical solution is presented for a system of differential equations of heat and mass transfer in a boundary layer in the laminar condensation of a gas on a horizontal tube.Notation g acceleration due to gravity - r external radius of tube - r_k latent heat of condensation - Pr Prandtl number - Sc Schmidt number - T temperature - x distance along circumference - y distance along radius beyond the cylindrical surface - viscosity - density - kinematic viscosity Indices s saturated - liquid-gas interface - h gas - q liquid - wl wall Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 40, No. 5, pp. 793–799, May, 1981.