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Heat Transfer Research
インパクトファクター: 1.199 5年インパクトファクター: 1.155 SJR: 0.267 SNIP: 0.503 CiteScore™: 1.4

ISSN 印刷: 1064-2285
ISSN オンライン: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.2012003587
pages 711-735

Mixed Convection of Water-Based Nanofluids in a Lid-Driven Square Enclosure with a Heat Source

Kamil Kahveci
Department of Mechanical Engineering, Faculty of Engineering and Architecture, Trakya University, 22030, Edirne, Turkey
Elif Buyuk Ogut
Vocational School of Gebze, Kocaeli University, 1410 Çayirova-Kocaeli, Turkey

要約

This study is concerned with mixed convection of water-based nanofluids in a lid-driven square enclosure with a constant heat flux heater. The governing equations are solved numerically using the differential quadrature method. The computational results are obtained for the heater lengths of 0.25, 0.50, and 0.75. The Grashof number is kept at a constant value of 104, and the Reynolds number is varied so that the Richardson number will have values in the range of 0.1 to 10. The nanoparticles volume fraction φ is varied as 0%, 5%, and 10% and the value of the ratio of the nanolayer thickness to the original particle radius η is fixed to 0.1. The results show that the presence of nanoparticles in the base fluid causes a significant enhancement of heat transfer. The results also show that the heat transfer rate increases considerably with a decrease in the Richardson number and the length of the heater.


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