A numerical method is presented for the analysis of laminar film-wise
condensation of vapour flowing downwards on a horizontal tube. The gov
erning equations of condensate flow include the pressure gradient, ine
rtia and convective terms in addition to gravity and viscous terms. Th
e effect of vapour shear on condensation is determined by simultaneous
computation of the condensate and vapour flow fields using compatible
interfacial conditions. Results obtained from the analysis are given
in diagrams and compared with the results given in literature.