Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5110
Title: A heatline analysis of natural convection in a square inclined enclosure filled with a CuO nanofluid under non-uniform wall heating condition
Authors: Öztop, Hakan Fehmi
Mobedi, Moghtada
Abu-Nada, Eiyad
Pop, Ioan
Mobedi, Moghtada
Keywords: Natural convection
Enclosures
Heatline
Nanofluid
Heat transfer
Issue Date: Sep-2012
Publisher: Elsevier Ltd.
Source: Öztop, H. F., Mobedi, M., Abu-Nada, E., and Pop, I. (2012). A heatline analysis of natural convection in a square inclined enclosure filled with a CuO nanofluid under non-uniform wall heating condition. International Journal of Heat and Mass Transfer, 55(19-20), 5076-5086. doi:10.1016/j.ijheatmasstransfer.2012.05.007
Abstract: Heatline visualization technique is used to understand heat transport path in an inclined non-uniformly heated enclosure filled with water based CuO nanofluid. The cavity has square cross-section and it is non-uniformly heated from a wall and cooled from opposite wall while other walls are adiabatic. The governing equations which are continuity, momentum and energy equations are solved using finite volume method. The dimensionless heatfunction for nanofluid heat flow is defined and solved to determine heatline patterns. Calculations were performed for Rayleigh numbers of 10 3, 10 4 and 10 5, inclination angle of 0°, 30°, 60°and 90°, and nanoparticle fraction of 0, 0.02, 0.04, 0.06, 0.08 and 0.1. It is observed that heat transfer in the cavity increases by adding nanoparticles. The rate of increase is greater for the enclosures with low Rayleigh number. Visualization of heatline is successfully applied to nanoparticle convective flows. Based on the heatline patterns, three heat transfer regions are observed and discussed in details. © 2012 Elsevier Ltd. All rights reserved.
URI: http://doi.org/10.1016/j.ijheatmasstransfer.2012.05.007
http://hdl.handle.net/11147/5110
ISSN: 0017-9310
1879-2189
Appears in Collections:Mechanical Engineering / Makina Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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