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Entropy 2016, 18(6), 232; doi:10.3390/e18060232

3D Buoyancy-Induced Flow and Entropy Generation of Nanofluid-Filled Open Cavities Having Adiabatic Diamond Shaped Obstacles

College of Engineering, Mechanical Engineering Department, Haïl University, Haïl City 2240, Saudi Arabia
Unité de Recherche de Métrologie et des Systèmes Energétique, Ecole Nationale d’Ingénieurs, University of Monastir, Monastir City 5000, Tunisia
Young Researchers and Elite Club, Mashhad Branch, Islamic Azad University, Mashhad 9187147578, Iran
Department of Mechanical Engineering, Technology Faculty, Fırat University, Elazig 23119, Turkey
Mechanical Engineering Department, Faculty of Engineering, King Abdulaziz University, P.O. Box 80204, Jeddah 21589, Saudi Arabia
Unité de Recherche Matériaux, Énergie et Énergies Renouvelables, Faculté des Sciences de Gafsa, Gafsa 2100, Tunisia
Author to whom correspondence should be addressed.
Academic Editor: Kevin H. Knuth
Received: 1 May 2016 / Revised: 14 June 2016 / Accepted: 15 June 2016 / Published: 21 June 2016
(This article belongs to the Special Issue Entropy in Nanofluids)


A three dimensional computational solution has been obtained to investigate the natural convection and entropy generation of nanofluid-filled open cavities with an adiabatic diamond shaped obstacle. In the model, the finite volume technique was used to solve the governing equations. Based on the configuration, the cavity is heated from the left vertical wall and the diamond shape was chosen as adiabatic. Effects of nanoparticle volume fraction, Rayleigh number (103 ≤ Ra ≤ 106) and width of diamond shape were studied as governing parameters. It was found that the geometry of the partition is a control parameter for heat and fluid flow inside the open enclosure. View Full-Text
Keywords: numerical; three dimensional; open cavity; nanofluids; entropy generation numerical; three dimensional; open cavity; nanofluids; entropy generation

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Kolsi, L.; Mahian, O.; Öztop, H.F.; Aich, W.; Borjini, M.N.; Abu-Hamdeh, N.; Aissia, H.B. 3D Buoyancy-Induced Flow and Entropy Generation of Nanofluid-Filled Open Cavities Having Adiabatic Diamond Shaped Obstacles. Entropy 2016, 18, 232.

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