All Title Author
Keywords Abstract

Publish in OALib Journal
ISSN: 2333-9721
APC: Only $99

ViewsDownloads

Effect of Porosity on the Laminar Condensation Type Thin Film on a Vertical Wall in Forced Convection

DOI: 10.4236/oalib.1108828, PP. 1-13

Subject Areas: Fluid Mechanics, Modern Physics, Mechanics

Keywords: Condensation, Porosity, Forced Convection, Vertical Wall, Nusselt Number

Full-Text   Cite this paper   Add to My Lib

Abstract

Studies concerning induced heat transfer by the condensation in forced convection of a thin film of a saturated vapor in medium porous, have received particular attention because of their numerous applications in various fields of technology. Thus, the presence of a layer of porous material on a plane wall generates an increase in heat transfer compared with that observed for a flat plate, subject to the same aeraulic and thermal conditions. This prompted us, given the large field of applications, to develop this research theme. It is therefore a question of studying the influence of the parameters governing the problem and the results that we would obtain allowing us to better quantify their effects and their importance in the thin-film flows. But unlike other authors and given the ranges of the chosen parameters, we retain a modified Wooding formulation in which the diffusion effects of the fluid are taken into account with an equally effective viscosity to the viscosity of the fluid. The advective term is maintained in the conservation equation of the momentum because one of our motivations is to study transfers and flow structures in a medium saturated by a binary fluid and entirely or partially porous. In this paper, the author has highlighted the effect of porosity on the velocity, temperature, the adimensionless thickness of the liquid film and the Nusselt number. The results of this study show that: the reduced porosity causes an increase in velocity, the adimensionless thickness of the liquid film and the Nusselt number. She (porosity) does not affect the variation of the adimensionless longitudinal temperature.

Cite this paper

Ndiaye, M. , Sène, M. , Ndiaye, G. and Mané, M. S. (2022). Effect of Porosity on the Laminar Condensation Type Thin Film on a Vertical Wall in Forced Convection. Open Access Library Journal, 9, e8828. doi: http://dx.doi.org/10.4236/oalib.1108828.

References

[1]  Chang, T.B. and Wang, F.J. (2009) An Analytical Investigation into Film Wise Condensation on a Horizontal Tube in a Porous Medium with Suction at the Tube Surface. Heat and Mass Transfer, 45, 355-361. https://doi.org/10.1007/s00231-008-0436-y
[2]  Zhulev, Yu.G. and Kosarenkov, V.A. (1968) Theoretical Investigation of Laminar Film Condensation of a Saturated Vapor Flow over an Isothermal Surface. Journal of Engineering Physics and Thermophysics, 15, 897-899. https://doi.org/10.1007/BF00826667
[3]  Nagendra, H.R. (1973) Effect of Inclination on Laminar Film Condensation. Flow, Turbulence and Combustion, 28, 261-277. https://doi.org/10.1007/BF00413072
[4]  Chang, T.B. and Wang, F.J. (2008) Nusselt Number and Entropy Generation Rate of Film Condensation on a Horizontal Plate. Journal of Mechanical Science and Technology, 22, 2134-2141. https://doi.org/10.1007/s12206-008-0802-1
[5]  Asbik, M., Chaynane, R., Boushaba, H., Zeghmati, B. and Khmou, A. (2003) Vertical Porous-Layer Coated Surface. Heat and Mass Transfer, 40, 143-155. https://doi.org/10.1007/s00231-002-0406-8
[6]  Hill, A.A. (2007) Unconditional Nonlinear Stability for Convection in a Porous Medium with Vertical through Flow. Acta Mechanica, 193, 197-206. https://doi.org/10.1007/s00707-007-0473-5
[7]  Avramenko, A.A., Kuznetsov, A.V., Basok, B.I. and Blinov, D.G. (2005) Investigation of Stability of a Laminar Flow in a Parallel-Plate Channel Filled with a Fluid Saturated Porous Medium. Physics of Fluids, 17, Article ID: 094102. https://doi.org/10.1063/1.2041607
[8]  Lage, J.L., Krueger, P.S. and Narasimhan, A. (2005) Protocol for Measuring Permeability and Form Coefficient of Porous Media. Physics of Fluids, 17, Article ID: 088101. https://doi.org/10.1063/1.1979307
[9]  Kim, Y.J. (2001) Unsteady Convection Flow of Micropolar Fluids past a Vertical Plate Embedded in a Porous Medium. Acta Mechanica, 148, 105-116. https://doi.org/10.1007/BF01183672
[10]  Sammouda, M., Gueraoui, K., Driouich, M., Ghouli, A. and Dhiri, A. (2013) Double Diffusive Natural Convection in Non-Darcy Porous Media with Non-Uniform Porosity. International Journal on Heat and Mass Transfer: Theory and Applications, 1, 1021-1030.
[11]  Kozeny-Carman, P. (1937) Fluid Flow through a Granular Bed. Transactions of the Institution of Chemical Engineers, 15, 150-167.

Full-Text


comments powered by Disqus

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133

WeChat 1538708413