Étude numérique de l'évaporation dans un courant d'air humide laminaire d'un film d'eau ruisselant sur une plaque inclinée

Convective heat and mass transfer with evaporation of a falling film in a cavity

“…Recently, Cherif and Daif [11], Agunaoun et al [12], Mezaache and Daguenet [13] considered two-dimensional equations in the liquid film. In this way, Agunaoun et al [12] applied this method to study the evaporation of a thin water film in a stream of humid air flowing on a plane inclined surface at constant temperature larger than the air temperature.…”

“…They concluded that the results obtained by neglecting the liquid film can be erroneous by more than 1000%. The evaporation of a water falling film on an inclined plate in a laminar stream of humid air has been studied numerically by Mezaache and Daguenet [13]. The gas and liquid phase equations have been considered under a two-dimensional form.…”

Mixed Convection Heat and Mass Transfer with Phase Change and Flow Reversal in Channels

“…Their results pointed out that the plate and the gas-liquid interface temperatures are reduced consequently to the increase of the plate's inclination angle, the inlet film thickness or the air velocity. Mezaache & Daguenet (2000) conducted a numerical study of the evaporation of a water film falling on an inclined plate in a forced convection flow of humid air. The plate is insulated or heated by a constant heat flux.…”

“…Many simplifying assumptions were used in the literature to derive mathematical models for the liquid phase. The boundary layer approximations are often used to derive a simplified model (Chow & Chung 1983;Chang et al 1986;Lin et al 1988;He et al 1998;Mezaache & Daguenet 2000). Regarding the liquid-gas interface, one of the main hypotheses used in the literature is the so-called Nusselt's approximation (Nusselt, 1916), which neglects the shear stresses along this interface (Suzuki et al 1983;Shembharkar & Pai 1986;Baumann & Thiele 1990).…”

Experimental study of the evaporation of a falling film in a closed cavity

“…In the first works such as [ 12] and [6], the liquid film is supposed to be steady. The film flow has been modelled over a vertical wall in a mono-dimensional [13] or partly bi-dimensional approach [14] or over an inclined wall in a bi-dimensionai approach [2,5,8]. The study of the evaporation process is made more difficult by the consideration of the heat and mass transfer in the liquid film, especially in the bi-dimensional case.…”