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Numerical Investigation of Turbulent Convection in Al2O3/Water Nanofluid With Temperature Dependent Properties

[+] Author Affiliations
Vincenzo Bianco, Oronzio Manca, Sergio Nardini

Seconda Università degli Studi di Napoli, Aversa, CE, Italy

Paper No. IMECE2009-12526, pp. 1223-1231; 9 pages
  • ASME 2009 International Mechanical Engineering Congress and Exposition
  • Volume 9: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B and C
  • Lake Buena Vista, Florida, USA, November 13–19, 2009
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4382-6 | eISBN: 978-0-7918-3863-1
  • Copyright © 2009 by ASME


In this paper turbulent forced convection flow of a water–Al2 O3 nanofluid in a circular tube subjected to a constant and uniform heat flux at the wall is numerically analyzed. Two different approach are taken into account: single and two-phase models, with particle dimension equal to 38 nm. Temperature dependant thermophysical properties are considered for both the approaches. The CFD commercial code Fluent is employed to solve the problem by means of finite volume method. It is found that convective heat transfer coefficient for nanofluids is greater than that of the base liquid. Heat transfer enhancement is increasing with the particle volume concentration and Reynolds number. A good agreement is found with the correlation of Xuan and Li.

Copyright © 2009 by ASME



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