“…At present, the liquid film dynamic modelling [18] is one of the most critical aspect that is starting to be implemented by the most updated codes in the literature [45]- [47], nevertheless, the author suggests that each numerical model should be validated not only with the overall evaporator temperature behaviour observed experimentally but with more detailed local data. In this regard, the paper by Rouaze et al [49] published in this special issue resumes the last updated version of the variable thickness wedge film model firstly proposed by Professor Thome's research group [50]. The code has been experimentally validated on several parameters in pseudo steady state conditions and proved its ability to predict the local temperature gradient as well as flow regimes transition in horizontal orientation.…”