Implementation of a generalized diffusion layer model for condensation into MELCOR

A CFD study of wave influence on film steam condensation in the presence of non-condensable gas

“…For this reason, the mass fraction of non-condensable gases is treated as the major variable in many experimental correlations. For theoretical studies, since it is not easy to solve all the field equations for steam condensation with non-condensable gases, the analogy between heat and mass transfer becomes a more common approach for engineering application Hogan et al, 2010;Peterson et al, 1993 However, it has been found by some researchers that the condensate film can have a certain influence on steam condensation not only due to liquid thermal resistance and interface shear stress, but also due to the wave structure of the falling film (de la Rosa et al, 2009). A wavy interface is one of the main characteristics of the falling condensate film, beginning with a film Reynolds number as small as 30.…”

Review of vapor condensation heat and mass transfer in the presence of non-condensable gas

“…Liao and Vierow et al [137,138] and Hogan et al [139] then expanded the diffusion layer model to the generalized diffusion layer model. They proposed that, from the kinetic theory of gases, Fick's law of diffusion was more appropriately expressed on a mass basis than on a molar basis; they also 9.…”