Statistical characteristics of waves on the surface of the falling liquid film
Results of a systematic experimental study of a liquid film flow regimes on a vertical plate in the range of Reynolds numbers 5 < Re <100 are presented. Analysis of several statistical quantities allows us to describe more specifically the classification of the flow regimes. It is shown, that for the pronounced rivulet flow regimes damping motion pattern of the wave evolution takes place. Thereat statistical characteristics for the case of natural evolution differ from that for the case of generated waves. For the higher Re case, when rivulets are not observed, fast evolution of the all characteristics on the upper part of the flow is indicative. Subsequently all studied statistical characteristics accept steady value, with noticeable distinctions between cases of the natural and generated wave evolution being absent.