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Numerical study of heat and mass transfer optimization in a 3D inclined solar distiller

Ghachem Kaouther (University of Monastir, Ecole Nationale d’Ingénieurs, Unité de Métrologie et des Systèmes Energétiques, Monastir, Tunisia)
Maatki Chamseddine (University of Monastir, Ecole Nationale d’Ingénieurs, Unité de Métrologie et des Systèmes Energétiques, Monastir, Tunisia)
Kolsi Lioua (University of Monastir, Ecole Nationale d’Ingénieurs, Unité de Métrologie et des Systèmes Energétiques, Monastir, Tunisia + Haïl University, College of Engineering, Mechanical Engineering Department, Haïl City, Saudi Arabia)
Alshammari Naif (Haïl University, College of Engineering, Mechanical Engineering Department, Haïl City, Saudi Arabia)
Oztop Hakan F. (Firat University, Technology Faculty, Dept. Mech. Engineering, Elazig, Turkey)
Borjini Mohamed Naceur (University of Monastir, Ecole Nationale d’Ingénieurs, Unité de Métrologie et des Systèmes Energétiques, Monastir, Tunisia)
Ben Aissia Habib (University of Monastir, Ecole Nationale d’Ingénieurs, Unité de Métrologie et des Systèmes Energétiques, Monastir, Tunisia)
Al-Salem Khaled (King Saud University, College of Engineering, Department of Mech. Engineering, Riyadh, Saudi Arabia)

A numerical study of the 3-D double-diffusive natural convection in an inclined solar distiller was established. The flow is considered laminar and caused by the interaction of thermal energy and the chemical species diffusions. The governing equations of the problem, are formulated using vector potential-vorticity formalism in its 3-D form, then solved by the finite volumes method. The Rayleigh number is fixed at Ra = 105 and effects of the buoyancy ratio and inclination are studied for opposed temperature and concentration gradients. The main purpose of the study is to find the optimum inclination angle of the distiller which promotes the maximum mass and heat transfer.

Keywords: Solar distiller, 3-D study, Double diffusive convection, inclination cavity