Simulation of unstable liquid film flow in heat and mass transfer processes of film equipment

Abstract

Abstract This work presents results of computational modeling of vertical water liquid film flow at moderate Reynolds numbers in the framework of partial differential equation of the state of the free surface of the liquid film. Equation coefficients include different physicochemical factors such as surface tension parameter and temperature gradients influence parameter. Utility developed in C++ is used for computation of wave characteristics and instability regions of liquid films. Computational experiments were carried out for the vertical water film both at free flow and at evaporation. Results could be used in the design or modernization of existing equipment and in the design of technological processes in liquid films.