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Numerical Investigation of Nanofluids Laminar Convective Heat Transfer through Staggered and In-Lined Tube Banks

  • Jun-Bo Huang
  • Jiin-Yuh Jang
Part of the Advances in Intelligent and Soft Computing book series (AINSC, volume 144)

Abstract

Laminar forced convection of a water-based suspension of Al2O3 nanoparticles through in-line and staggered tube banks with constant wall temperature boundary condition have been investigated numerically. A two phase mixture model is employed to simulate the nanofluid convection, taking into account appropriate thermophysical properties. Nanoparticles are assumed spherical with a diameter equal to 50 nm. The effects of Reynolds number and nanoparticle volume concentration on the flow and heat transfer behavior are studied. Results show that convective heat transfer coefficient and pressure drop for nanofluids is greater than that of the base fluid. It is found that the heat transfer enhancement increases with increase in Reynolds number and nanoparticle volume concentration. In general, the heat transfer in a staggered array of tubes is found to be higher than that in an in-lined array of tubes.

Keywords

Nanofluids In-line tube bank Staggered tube bank 

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Copyright information

© Springer-Verlag GmbH Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringNational Cheng-Kung UniversityTainanTaiwan

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