Analysis of laminar forced convection condensation within thin porous coatings

Journal Article · Fri Apr 01 00:00:00 EST 1994 · Journal of Thermophysics and Heat Transfer; (United States)

DOI:https://doi.org/10.2514/3.538· OSTI ID:6980127

Renken, K J; Carneiro, M J; Meechan, K ^[1]

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1. Univ. of Wisconsin, Milwaukee, WI (United States)

The effect of laminar forced convection on enhanced filmwise condensation within thin inclined porous coatings is numerically investigated. The model simulates two-dimensional condensation within very permeable and highly conductive porous substrates. The Darcy-Brinkman-Forchheimer model is utilized to describe the flowfield within the porous layer while classical boundary-layer equations are employed in the pure condensate region. The numerical results document the dependence of the temperature field and the heat transfer rate on the governing parameters such as the Reynolds number, the Rayleigh number, the Darcy number, the Jakob number, the Prandtl number, as well as the porous coating thickness and effective thermal conductivity. The results of this study provide valuable fundamental predictions of enhanced film condensation that can be used in a number of practical thermal engineering applications. 28 refs.

• OSTI ID: 6980127
• Journal Information: Journal of Thermophysics and Heat Transfer; (United States), Vol. 8:2; ISSN 0887-8722
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
FILM CONDENSATION
MATHEMATICAL MODELS
TEMPERATURE DISTRIBUTION
POROUS MATERIALS
COATINGS
LAMINAR FLOW
THIN FILMS
THERMAL CONDUCTIVITY
FORCED CONVECTION
CONVECTION
ENERGY TRANSFER
FILMS
FLUID FLOW
HEAT TRANSFER
MASS TRANSFER
MATERIALS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
VAPOR CONDENSATION
420400* - Engineering- Heat Transfer & Fluid Flow