Features of Transport processes of Nanofluids

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Abstract

The current state of the description of the transport processes in nanofluids is discussed. The nanofluids with spherical nanoparticles and single-walled carbon nanotubes are analyzed. It was shown that the viscosity and thermal conductivity of the nanofluids with ordinary spherical nanoparticles are not described by the classical theories. Both viscosity and thermal conductivity depend not only on particles concentration but also on their size and material. The viscosity increases with decreasing particle size, but for thermal conductivity, the opposite behavior is fixed. The rheology of the nanofluids with carbon nanotubes studied is non-Newtonian and is essentially depended on the surfactant used. The thermal conductivity of nanofluids with carbon nanotubes is significantly (at least several times) higher than the thermal conductivity of nanofluids with spherical particles. In all cases, the thermal conductivity of the nanofluids with carbon nanotubes presented is much greater than the corresponding values of the Maxwell theory.

Original languageEnglish
Article number4
Pages (from-to)29-50
Number of pages22
JournalInterfacial Phenomena and Heat Transfer
Volume9
Issue number2
DOIs
Publication statusPublished - 2021

Keywords

  • nanofluids
  • nanoparticles
  • carbon nanotubes
  • viscosity
  • thermal conductivity
  • experiment
  • molecular dynamics
  • WALLED CARBON NANOTUBES
  • THERMAL-CONDUCTIVITY ENHANCEMENT
  • MOLECULAR-DYNAMICS SIMULATION
  • HEAT-TRANSFER CHARACTERISTICS
  • GLYCOL-BASED NANOFLUIDS
  • AQUEOUS SUSPENSIONS
  • ETHYLENE-GLYCOL
  • VISCOSITY COEFFICIENT
  • RHEOLOGICAL BEHAVIOR
  • PARTICLE-SIZE
  • Viscosity
  • Experiment
  • Nanofluids
  • Carbon nanotubes
  • Molecular dynamics
  • Nanoparticles
  • Thermal conductivity

OECD FOS+WOS

  • 2.04 CHEMICAL ENGINEERING
  • 1.03 PHYSICAL SCIENCES AND ASTRONOMY
  • 2.03.DT THERMODYNAMICS

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