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Numerical simulation of film condensation on vertical plate embedded in metallic foams. (English) Zbl 1278.76112

Summary: Film condensation on vertical plate embedded in metal foams was numerically investigated based on some modification for Nusselt theory. Related numerical model was established by introducing Brinkman-Darcy model. Advection and inertial force in the condensate film were considered, from which the non-linear effect of cross-sectional temperature distribution on condensation heat transfer was also involved. Condensation characteristics were discussed and compared with those on smooth surface. Effects of key parameters on condensate film thickness were examined. Furthermore, with either the increase in porosity or the decrease in pore density, the condensate layer becomes thinner.

MSC:

76T10 Liquid-gas two-phase flows, bubbly flows
76A20 Thin fluid films
76S05 Flows in porous media; filtration; seepage
76M12 Finite volume methods applied to problems in fluid mechanics
80A22 Stefan problems, phase changes, etc.