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Influence of Agglomeration on the Viscosity of Nanofluids

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Journal of Engineering Physics and Thermophysics Aims and scope

A model of the associated layer on the surface of nanoparticles in a fluid, which makes up mechanically integrated inclusions with them, has been proposed. Such inclusions can primarily be considered as solid particles with a diameter larger than their nucleus. This can be interpreted as the effective increase in the volume concentration of primary particles, which makes it possible to adapt the existing Batchelor formula to describe the results of measurements of the nanofluid viscosity. The inevitability of the agglomeration of nanoparticles in view of the associated fluid layer being present on their surface has also been demonstrated. It has been shown that the effective volume concentration depends on the size of primary nanoparticles and the degree of their agglomeration. Furthermore, data have been presented according to which the associated-layer thickness for particles with a diameter under 20 mm becomes dependent on the nanoparticle size.

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Authors and Affiliations

  1. Far Eastern Federal University, 8 Sukhanov Str., Vladivostok, 690090, Russia

    A. P. Zav′yalov

  2. S. A. Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, 4/1 Institutskaya Str., Novosibirsk, 630090, Russia

    V. V. Syzrantsev, K. V. Zobov & S. P. Bardakhanov

  3. Buryat State University, 24a Smolin Str., Ulan-Ude, 670000, Russia

    V. V. Syzrantsev & S. P. Bardakhanov

Authors
  1. A. P. Zav′yalov
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  2. V. V. Syzrantsev
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  3. K. V. Zobov
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  4. S. P. Bardakhanov
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Corresponding author

Correspondence to A. P. Zav′yalov.

Additional information

Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 91, No. 1, pp. 123–132, January–February, 2018.

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Zav′yalov, A.P., Syzrantsev, V.V., Zobov, K.V. et al. Influence of Agglomeration on the Viscosity of Nanofluids. J Eng Phys Thermophy 91, 115–123 (2018). https://doi.org/10.1007/s10891-018-1725-z

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  • DOI: https://doi.org/10.1007/s10891-018-1725-z

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