Analytical investigation of forced convection film condensation on a vertical porous-layer coated surface

Asbik, Mohamed; Chaynane, R.; Boushaba, H.; Zeghmati, Belkacem; Khmou, A.

doi:10.1007/s00231-002-0406-8

Cited by 15 publications

(12 citation statements)

References 18 publications

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“…Finally, we indicate that the effect of the flow regime (DB or DBF), for the case of thermal dispersion coefficient γ = 0 (absence of thermal dispersion), was examined in more detail by Asbik et al (2003). Figures 2 and 3 show the dimensionless velocity (Eq.…”

Section: Resultsmentioning

confidence: 99%

“…Referring to the thermal dispersion effects in the case of DB flow model, which corresponds to A = 0, the dimensionless velocity reported by Renken et al (1989), Renken andMueller (1993), Asbik et al (2002Asbik et al ( , 2003 and temperature profiles are expressed, respectively, by…”

Section: Combined Effect Of the Thermal Dispersion And Flow Modelmentioning

confidence: 99%

“…The analytical method used to solve Eq. 5 has been established by Asbik et al (2003), whereas Eq. 6 is solved in the Appendix.…”

Section: Analytical Solutionsmentioning

confidence: 99%

“…The basic equations of this study and the dimensionless variables are on the papers of Renken and Meechan (1995), and Asbik et al (2003). Indeed,…”

Section: Dimensionless Mathematical Equationsmentioning

confidence: 99%

“…The main objective of the investigation described in this paper is an extension of the recent work treated by Asbik et al (2002, 2003and Chaynane et al (2004 by supplying an analytical study of thermal dispersion effect during laminar film condensation over Figure 1 schematically shows the condensation process and defines the coordinate system used for the present study. A free stream vapor, at a saturation temperature of T s , flows, over a vertical porous-layer coated surface.…”

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confidence: 98%

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The effect of thermal dispersion on free convection film condensation on a vertical plate with a thin porous layer

et al. 2006

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An analytical solution to the problem of condensation by natural convection over a thin porous substrate attached to a cooled impermeable surface has been conducted to determine the velocity and temperature profiles within the porous layer, the dimensionless thickness film and the local Nusselt number. In the porous region, the Darcy-Brinkman-Forchheimer (DBF) model describes the flow and the thermal dispersion is taken into account in the energy equation. The classical boundary layer equations without inertia and enthalpy terms are used in the condensate region. It is found that due to the thermal dispersion effect, the increasing of heat transfer is significant. The comparison of the DBF model and the Darcy-Brinkman (DB) one is carried out.

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Section: Resultsmentioning

confidence: 99%

Section: Combined Effect Of the Thermal Dispersion And Flow Modelmentioning

confidence: 99%

“…The analytical method used to solve Eq. 5 has been established by Asbik et al (2003), whereas Eq. 6 is solved in the Appendix.…”

Section: Analytical Solutionsmentioning

confidence: 99%

“…The basic equations of this study and the dimensionless variables are on the papers of Renken and Meechan (1995), and Asbik et al (2003). Indeed,…”

Section: Dimensionless Mathematical Equationsmentioning

confidence: 99%

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confidence: 98%

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The effect of thermal dispersion on free convection film condensation on a vertical plate with a thin porous layer

et al. 2006

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Theoretical study of superheated vapor effect on liquid film condensation in a saturated porous medium using Forchheimer's model

Yaseen

Alrbai

2022

Heat Trans

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In this work, the superheated vapor effect on liquid film condensation in a saturated porous medium using Forchheimer's model has been investigated analytically and numerically. The applied governing equations, the continuity equation, the Forchheimer equation, and the energy equation were transformed using the similarity transformation technique into a dimensionless form using a set of suitable variables and then solved numerically using the Runge–Kutta method. Results obtained were graphically drawn to illustrate the effects of superheated vapor and subcooled liquid on the liquid film condensation, temperature, and heat transfer rate through the porous medium. It was found that the film thickness is a function of dimensionless parameters related to the degree of subcooling and Grashof number without a superheating effect. Consequently, the Nusselt number depends on the square root of the Rayleigh number, the Grashof number, and the dimensionless film thickness. It was also found that if superheating exists, the liquid film thickness then depends on four dimensionless parameters related to the Grashof number, the degree of subcooling of the liquid, the extent of the superheating of the surrounding vapor, and a property ratio of the liquid and the vapor phase.

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Convection with Change of Phase

Nield

Bejan

2012

Convection in Porous Media

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Analytical investigation of forced convection film condensation on a vertical porous-layer coated surface

Cited by 15 publications

References 18 publications

The effect of thermal dispersion on free convection film condensation on a vertical plate with a thin porous layer

The effect of thermal dispersion on free convection film condensation on a vertical plate with a thin porous layer

Theoretical study of superheated vapor effect on liquid film condensation in a saturated porous medium using Forchheimer's model

Convection with Change of Phase

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