Effect of Reynolds number on heat transfer and flow for multi-oxide nanofluids using numerical simulation

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Abstract

A numerical simulation model for laminar flow of nanofluids in a pipe with constant heat flux at the wall has been built to study the effect of Reynolds number on heat transfer and pressure loss. The investigation was performed for metallic oxide and multi-oxide nanoparticles suspended in water. The thermal conductivity and dynamic viscosity were measured for a range of temperature (10-60 C) and volume fraction of multi-oxide nanofluid. Comparison of the thermal conductivity for monocular oxide and multi-oxide nanofluids reveals a new way to control the enhancement in nanofluid conductivity. The numerical results obtained were compared with existing well-established correlations. The predictions of the Nusselt number for nanofluids are in agreement with the Shah correlation, and the deviation in the results is less than 1 %. It is found that the pressure loss increases with the Reynolds number, nanoparticle density, and volume fraction for multi-oxide nanoparticles. However, the flow demonstrates enhancement in heat transfer which improves with increasing Reynolds number of the flow.

Original languageEnglish
Pages (from-to)2197-2210
Number of pages14
JournalResearch on Chemical Intermediates
Volume39
Issue number5
DOIs
Publication statusPublished - May 2013

Fingerprint

Oxides
Reynolds number
Heat transfer
Computer simulation
Nanoparticles
Volume fraction
Thermal conductivity
Nusselt number
Laminar flow
Heat flux
Pipe
Viscosity
Water
Temperature

Keywords

  • Heat transfer coefficient
  • Heat transfer enhancement
  • Nanofluid
  • Oxide nanoparticles
  • Pressure loss

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

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title = "Effect of Reynolds number on heat transfer and flow for multi-oxide nanofluids using numerical simulation",
abstract = "A numerical simulation model for laminar flow of nanofluids in a pipe with constant heat flux at the wall has been built to study the effect of Reynolds number on heat transfer and pressure loss. The investigation was performed for metallic oxide and multi-oxide nanoparticles suspended in water. The thermal conductivity and dynamic viscosity were measured for a range of temperature (10-60 C) and volume fraction of multi-oxide nanofluid. Comparison of the thermal conductivity for monocular oxide and multi-oxide nanofluids reveals a new way to control the enhancement in nanofluid conductivity. The numerical results obtained were compared with existing well-established correlations. The predictions of the Nusselt number for nanofluids are in agreement with the Shah correlation, and the deviation in the results is less than 1 {\%}. It is found that the pressure loss increases with the Reynolds number, nanoparticle density, and volume fraction for multi-oxide nanoparticles. However, the flow demonstrates enhancement in heat transfer which improves with increasing Reynolds number of the flow.",
keywords = "Heat transfer coefficient, Heat transfer enhancement, Nanofluid, Oxide nanoparticles, Pressure loss",
author = "Balla, {Hyder H.} and Shahrir Abdullah and Al-Mulla, {Emad A Jaffar} and {Wan Mahmood}, {Wan Mohd Faizal} and Rozli Zulkifli and Kamaruzzaman Sopian",
year = "2013",
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T1 - Effect of Reynolds number on heat transfer and flow for multi-oxide nanofluids using numerical simulation

AU - Balla, Hyder H.

AU - Abdullah, Shahrir

AU - Al-Mulla, Emad A Jaffar

AU - Wan Mahmood, Wan Mohd Faizal

AU - Zulkifli, Rozli

AU - Sopian, Kamaruzzaman

PY - 2013/5

Y1 - 2013/5

N2 - A numerical simulation model for laminar flow of nanofluids in a pipe with constant heat flux at the wall has been built to study the effect of Reynolds number on heat transfer and pressure loss. The investigation was performed for metallic oxide and multi-oxide nanoparticles suspended in water. The thermal conductivity and dynamic viscosity were measured for a range of temperature (10-60 C) and volume fraction of multi-oxide nanofluid. Comparison of the thermal conductivity for monocular oxide and multi-oxide nanofluids reveals a new way to control the enhancement in nanofluid conductivity. The numerical results obtained were compared with existing well-established correlations. The predictions of the Nusselt number for nanofluids are in agreement with the Shah correlation, and the deviation in the results is less than 1 %. It is found that the pressure loss increases with the Reynolds number, nanoparticle density, and volume fraction for multi-oxide nanoparticles. However, the flow demonstrates enhancement in heat transfer which improves with increasing Reynolds number of the flow.

AB - A numerical simulation model for laminar flow of nanofluids in a pipe with constant heat flux at the wall has been built to study the effect of Reynolds number on heat transfer and pressure loss. The investigation was performed for metallic oxide and multi-oxide nanoparticles suspended in water. The thermal conductivity and dynamic viscosity were measured for a range of temperature (10-60 C) and volume fraction of multi-oxide nanofluid. Comparison of the thermal conductivity for monocular oxide and multi-oxide nanofluids reveals a new way to control the enhancement in nanofluid conductivity. The numerical results obtained were compared with existing well-established correlations. The predictions of the Nusselt number for nanofluids are in agreement with the Shah correlation, and the deviation in the results is less than 1 %. It is found that the pressure loss increases with the Reynolds number, nanoparticle density, and volume fraction for multi-oxide nanoparticles. However, the flow demonstrates enhancement in heat transfer which improves with increasing Reynolds number of the flow.

KW - Heat transfer coefficient

KW - Heat transfer enhancement

KW - Nanofluid

KW - Oxide nanoparticles

KW - Pressure loss

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