Numerical Analysis of Heat Transfer of a Flow Confined by Wire Screen in Lithium Bromide Absorption Process

Herbert Obame Mve; Romuald Rullière; Rémi Goulet; Phillippe Haberschill

doi:10.4028/www.scientific.net/DDF.348.40

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Numerical Analysis of Heat Transfer of a Flow Confined by Wire Screen in Lithium Bromide Absorption Process
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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vol. 348Numerical Analysis of Heat Transfer of a Flow...

Numerical Analysis of Heat Transfer of a Flow Confined by Wire Screen in Lithium Bromide Absorption Process

Abstract:

The present study deals with the numerical analysis of heat transfer inside a lithium bromide solution flowing down between finely meshed plastic wire screens. These screens confine the flow through capillary action while allowing the water vapor transfer inside an innovative absorber technology. The complex menisci shape formed on the confinement grid level, where the surface tension forces are of first importance, are reconstructed by a volume of fluid (VOF) model. A continuum surface force model is used to account for the surface tension force. A static contact angle is used to define the wall adhesion. A new algorithm, consisting to set an unique constant temperature at the liquid/vapour interface and to determine the evolution of heat transfer characteristics over the simulation domain, has been implemented and validated by analytical solutions. A parametric study has been conducted to determine the effect of the inlet velocity and the geometrical parameters (wire diameter and the number of divisions).

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Periodical:

Defect and Diffusion Forum (Volume 348)

Pages:

40-50

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.348.40

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Online since:

January 2014

Authors:

Herbert Obame Mve, Romuald Rullière, Rémi Goulet, Phillippe Haberschill

Keywords:

Complex Menisci, Heat Transfer, Liquid/Vapour Interface, Numerical Simulation, Wire Screens

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