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Study on forced convective heat transfer of non-newtonian nanofluids

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Abstract

This paper is concerned with the forced convective heat transfer of dilute liquid suspensions of nanoparticles (nanofluids) flowing through a straight pipe under laminar conditions. Stable nanofluids are formulated by using the high shear mixing and ultrasonication methods. They are then characterised for their size, surface charge, thermal and rheological properties and tested for their convective heat transfer behaviour. Mathematical modelling is performed to simulate the convective heat transfer of nanofluids using a single phase flow model and considering nanofluids as both Newtonian and non-Newtonian fluid. Both experiments and mathematical modelling show that nanofluids can substantially enhance the convective heat transfer. Analyses of the results suggest that the non-Newtonian character of nanofluids influences the overall enhancement, especially for nanofluids with an obvious non-Newtonian character.

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Authors and Affiliations

  1. School of Energy Science & Engineering, Harbin Institute of Technology, Harbin, 150001, China

    Yurong He, Yubin Men, Xing Liu & Huilin Lu

  2. Institute of Particle Science & Engineering, University of Leeds, Leeds, LS2 9JT, UK

    Haisheng Chen & Yulong Ding

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  1. Yurong He
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  2. Yubin Men
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  3. Xing Liu
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  4. Huilin Lu
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  5. Haisheng Chen
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  6. Yulong Ding
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He, Y., Men, Y., Liu, X. et al. Study on forced convective heat transfer of non-newtonian nanofluids. J. Therm. Sci. 18, 20–26 (2009). https://doi.org/10.1007/s11630-009-0020-x

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  • DOI: https://doi.org/10.1007/s11630-009-0020-x

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