Natural convection with water-copper nanofluid around a finned vertical cylindrical electronic component

Abstract

Purpose

The purpose of this study is to quantify the free convective heat transfer around a vertical cylindrical electronic component equipped with vertical fins representing an antenna, contained in a closed cavity maintained isothermal. Its cooling is provided via a water-based copper nanofluid whose volume fraction varies between 0% and 10%. Its effective viscosity and thermal conductivity are determined with the Brinkman and Maxwell models.

Design/methodology/approach

The governing equation system has been solved by means of the volume control method based on the SIMPLE algorithm.

Findings

A Nusselt-Rayleigh correlation valid in the 3.32 × 10⁵ – 6.74 × 10⁷ Rayleigh number range is proposed. It allows the thermal sizing of the considered system used in high power electronics to ensure their correct operation in the worst conditions.

Originality/value

The proposed correlations are original and unpublished.

Citation

Baïri, A. and Velazquez, A. (2022), "Natural convection with water-copper nanofluid around a finned vertical cylindrical electronic component", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 32 No. 3, pp. 931-943. https://doi.org/10.1108/HFF-03-2021-0158