Journal
PHYSICS LETTERS A
Volume 378, Issue 45, Pages 3331-3339Publisher
ELSEVIER
DOI: 10.1016/j.physleta.2014.09.046
Keywords
Nanofluid; Brownian motion; Porous channel; Heat transfer; Expansion ratio
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Hydrothermal behavior of nanofluid fluid between two parallel plates is studied. One of the plates is externally heated, and the other plate, through which coolant fluid is injected, expands or contracts with time. The effective thermal conductivity and viscosity of nanofluid are calculated by KKL correlation. The effects of the nanoparticle volume fraction, Reynolds number, Expansion ratio and power law index on Hydrothermal behavior are investigated. Results show that heat transfer enhancement has direct relationship with Reynolds number when power law index is equals to zero but opposite trend is observed for other values of power law index. (C) 2014 Elsevier B.V. All rights reserved.
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