Iranian Journal of Mechanical Engineering Transactions of ISME

Iranian Journal of Mechanical Engineering Transactions of ISME

Numerical Investigation of Heat Transfer in Serpentine Microchannel with Al2O3/Water and CuO/Water Nanofluids

Authors
Saeed Bagheri 1
Sajad Rastad 2
Seid Amir Abbas Oloomi 3
Amir Hossein Negahi 4
Mahdi Ashtian Malayer 5
1 Department of Mechanical Engineering, Yazd Branch, Islamic Azad University, Yazd, Iran
2 PhD Student, Department of Mechanical Engineering, Yazd Branch, Islamic Azad University, Yazd, Iran
3 Assistant Professor, Department of Mechanical Engineering, Yazd Branch, Islamic Azad University, Yazd, Iran
4 Department of Mechanical Engineering, Yazd University, Yazd, Iran
5 Young Researchers and Elite Club, Yazd Branch, Islamic Azad University, Yazd, Iran
Abstract
In this research, heat sink microchannel will be investigated. In order to improve the efficiency of heat transfer should be increased the fluid thermal conductivity.in this study, Numerical Investigation of the forced convective heat transfer in Serpentine heat sink microchannel with water-AL2O3 and Water-CuO has been studied, and the influence of hydraulic diameter, the Reynolds number and volume fraction of nanoparticles on heat transfer is discussed. The results of this study show that with the increase of Reynolds from 97.3 to 97.98, the pressure drop for nanoparticles of CuO increased from 1.7 kPa to 31.4 kPa and with the increase of Reynolds from 91.80 to 1121.35 Nuselt number will be multiplied by 3.2.
Two different volume fractions of 1% and 3% and distinctive nanoparticle diameters were employed. Increasing the nanoparticles volume fraction together with decreasing the nanoparticles diameter enhances the Nusselt number value. The pressure drop coefficient did not change significantly by using nanofluid with various volume fractions and varied nanoparticle diameters.
Keywords
Microchannel
Nanofluids
Forced Convection
Nuselt Number

Subjects

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Iranian Journal of Mechanical Engineering Transactions of ISME
Volume 21, Issue 2 - Serial Number 55
Fluid Mechanics and Heat Transfer
Spring 2019
Pages 56-74

  • Receive Date 22 July 2018
  • Revise Date 23 January 2019
  • Accept Date 20 October 2019