Dynamic behaviour of a boundary layer with condensation along a flat plate - Comparison with suction

The dynamical behavior of laminar and turbulent boundary layers inside which a condensation phenomenon exists has been experimentally and numerically studied. The temperature difference between the exchange cold wall and the saturated air-steam flow at atmospheric pressure and moderate temperature (about 80-90 C) does not exceed 20 C. Evaluation of the mass flux at the wall in such a case allows the prediction of the ' equivalent suction rate' in a sucked boundary for the same external conditions but without any temperature difference. The comparison between the two phenomena reveals interesting similarities and some differences.