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Heat Transfer Research
IF: 0.404 5-Year IF: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Print: 1064-2285
ISSN Online: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.2018019485
pages 159-181

CONTROL OF HEAT TRANSFER AND FLUID FLOW VIA A MOVING FIN IN A TRIANGULAR ENCLOSURE FILLED WITH NANOFLUID

Lioua Kolsi
Unit of Metrology and Energy Systems, National Engineering School of Monastir, University of Monastir, Tunisia; College of Engineering, Mechanical Engineering Department, Haïl University, Saudi Arabia
Hakan F. Öztop
Department of Mechanical Engineering, Technology Faculty, Firat University, Elazig, Turkey; Mechanical Engineering Department, Faculty of Engineering, King Abdulaziz University, P.O. Box 40844, Jeddah 21511, Saudi Arabia
Abdullah A. A. A. Al-Rashed
Department of Automotive and Marine Engineering Technology, College of Technological Studies, Public Authority for Applied Education and Training, Kuwait
Abdelkarim Aydi
Department of Chemical and Materials Engineering, College of Engineering, Northern Border University, P.O. Box 1321, Arar, Saudi Arabia
Borjini Mohamed Naceur
Unité de Métrologie et des Systèmes Energétiques, Ecole Nationale d'Ingénieurs, 5000 Monastir, University of Monastir, Tunisia
Nidal Abu-Hamdeh
Mechanical Engineering Department, Faculty of Engineering, King Abdulaziz University, P.O. Box 40844, Jeddah 21511, Saudi Arabia

ABSTRACT

A computational study has been performed to solve the heat transfer and fluid flow problem in a triangular enclosure filled with nanofluids. It also has a moving fin in its top side. Three different cases are considered: a fixed fin (V = 0), a fin rotating clockwise (V+), and a fin rotating counterclockwise (V–). The cavity is heated and cooled from inclined walls and its bottom wall is adiabatic. Three-dimensional governing equations are solved by using the finite volume method. Other governing parameters are the Rayleigh number 103 ≤ Ra ≤ 106 and nanoparticle volume fraction 0.0 ≤ φ ≤ 0.15. It is found that heat transfer can be controlled via both a moving lid and particle addition into the base fluid.


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