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NUMERICAL SIMULATION OF THERMAL PROTECTION WITH WATER LIQUID FILM ALONG AN INSULATED VERTICAL CHANNEL

DOI: 10.1615/ICHMT.2009.CONV.1120
9 pages

M'barek Feddaoui
Laboratory of Energy Engineering, Materials and Systems, ENSA, Ibn Zohr University, Morocco

Y. El Hammami
Laboratoire d'Ingénierie des Procédés, de l'Energie et de l'Environnement (LIP2E), Ecole Nationale des Sciences Appliquées, B.P. 1136, Agadir - Morocco

Saliha Senhaji
Laboratoire d'Ingénierie des Procédés, de l'Energie et de l'Environnement (LIP2E), Ecole Nationale des Sciences Appliquées, B.P. 1136, Agadir - Morocco

Touria Mediouni
Laboratoire d'Ingénierie des Procédés, de l'Energie et de l'Environnement (LIP2E), Ecole Nationale des Sciences Appliquées, B.P. 1136, Agadir - Morocco

Ahmed Mir
Laboratoire d'Ingénierie des Procédés, de l'Energie et de l'Environnement (LIP2E), Ecole Nationale des Sciences Appliquées, B.P. 1136, Agadir - Morocco

Abstract

A numerical study is reported to investigate a laminar mixed convection heat and mass transfer with thermal protection of channel walls subjected to a hot gas stream by using water film falling along a vertical channel. The walls are assumed to be thermally insulated. A marching procedure is employed for solution of the coupled governing equations for the liquid film and gas stream together. Parametric computations were performed to investigate the effects of Reynolds number, inlet temperature of hot gas stream and inlet liquid mass flow rate on the effectiveness of the walls protection. Results indicate that the liquid film can well protect the channel walls from a hot gas stream. Additionally, significant protection is observed for the system with a higher T0 and for lower Γ0.

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