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Effect of Nano-Particles on Natural Convection in Corrugated-Wall Enclosure

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Abstract

The heat transfer and fluid flow in a corrugated square cavity filled with nanofluid are investigated numerically. The opposite vertical walls are taken as having different temperatures, while the horizontal walls are considered as adiabatic. The nanofluid is copper-water, and three different shapes of corrugated boundaries are investigated here: wavy, triangular, and rectangular. The governing equations are solved with application of the SIMPLE algorithm, based on the control volume approach. This study investigates the effect of several parameters on the heat transfer: the boundary shape, Rayleigh number, nano-particle volume fraction, nano-particle diameter, cycle number, and triangle wave amplitude. The results show that corrugated boundaries reduce the heat transfer. In addition, it is found out that a nanofluid with \(\phi\) of about 0.02 has the highest value of heat transfer enhancement.

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Authors and Affiliations

  1. Department of Energy Engineering, Qom University of Technology, Qom, Iran

    H. Heidary

  2. Department of Mechanical Engineering, Pardis Branch, Islamic Azad University, Pardis, Iran

    M. Pirmohammadi

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  1. H. Heidary
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  2. M. Pirmohammadi
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Correspondence to M. Pirmohammadi.

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Heidary, H., Pirmohammadi, M. Effect of Nano-Particles on Natural Convection in Corrugated-Wall Enclosure. J. Engin. Thermophys. 31, 489–505 (2022). https://doi.org/10.1134/S1810232822030109

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  • DOI: https://doi.org/10.1134/S1810232822030109

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