“…The variation of detailed heat transfer results with a mixed convection parameter, temperature difference and gas concentration were presented, however, the only conclusion about transition to mixed convection that could be drawn was that the mixed convection effect depends on a number of variables. Recent studies [10,11] on condensation with a non-condensable gas employing boundary layer analysis concentrated on different flow configurations, the effects of turbulence, liquidphase inertia and energy convection, and also on solving the full boundary layer equations. None of these recent studies discussed the problem of convection regime identification.…”