Numerical simulation of heat transfer and turbulent flow of water nanofluids copper oxide in rectangular microchannel with semi-attached rib

By Omid Ali Akbari, Davood Toghraie, Arash Karimipour. 2016

148 citations recorded by the source corpus.

In this research, the effect of utilizing semi-attached rib on heat transfer and liquid turbulent flow of nanofluid water–copper oxide in three-dimensional rectangular microchannel has been investigated. The results of numerical examination of this study in comparison to those of smooth channel have also been evaluated. The range of Reynolds numbers is between 10,000 and 60,000 and the volume fraction of copper oxide nanoparticle in 0%, 2%, and 4% was examined. In this numerical simulation, the effects of the changes in parameters such as dimensions of semi-attached rib, volume fraction of the nanoparticle, and Reynolds number were considered. The results of this study showed that utilizing semi-attached rib in microchannel with a ratio of 0 < R/W ≤ 0.325 in producing stronger vortices, which causes better mixture in fluid layers, is weaker than that with tooth mode of R/W = 0 ratio. However, the main advantage of using tooth with a ratio of 0 < R/W ≤ 0.325 in comparison to ordinary tooth is the increase in heat transfer and reduction in coefficient friction and pumping power.

Subfields: Biomedical Engineering, Computational Mechanics, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/259cc4f5d0e8f8262b0f50fc6f3a45e764d4b33e

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In Biomedical Engineering

In Computational Mechanics

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Citations in the corpus

The effect of velocity and dimension of solid nanoparticles on heat transfer in non-Newtonian nanofluid (2017, background): “[12] numerically simulated heat transfer and a turbulent flow of a nanofluid, contains water copper-oxide in a rectangular microchannel with semi-adhesive dents.”
The effect of attack angle of triangular ribs on heat transfer of nanofluids in a microchannel (2018, background): “According to the figures, in higher Reynolds numbers, the increase in heat transfer is considerable due to the strengthening of fluid velocity parameters and a great mixture of fluid in different layers [63].”