Open Access

ARTICLE

A Study on Heat Transfer Enhancement through Various Nanofluids in a Square Cavity with Localized Heating

Sheikh Hassan¹, Didarul Ahasan Redwan¹, Md. Mamun Molla^1,2,*, Sharaban Thohura³, M. Abu Taher⁴, Sadia Siddiqa⁵

1 Department of Mathematics and Physics, North South University, Dhaka, Bangladesh
2 Center for Applied and Scientific Computing (CASC), North South University, Dhaka, Bangladesh
3 Department of Mathematics, Jagannath University, Dhaka, Bangladesh
4 Department of Mathematics, Dhaka University of Engineering and Technology, Gazipur, Bangladesh
5 Department of Mathematics, COMSAT University Islamabad, Attock Campus, Attock, Pakistan

* Corresponding Author: Md. Mamun Molla. Email:

Energy Engineering 2021, 118(6), 1659-1679. https://doi.org/10.32604/EE.2021.017657

Received 28 May 2021; Accepted 02 August 2021; Issue published 10 September 2021

Abstract

A two-dimensional (2D) laminar flow of nanofluids confined within a square cavity having localized heat source at the bottom wall has been investigated. The governing Navier–Stokes and energy equations have been non dimensionalized using the appropriate non dimensional variables and then numerically solved using finite volume method. The flow was controlled by a range of parameters such as Rayleigh number, length of heat source and nanoparticle volume fraction. The numerical results are represented in terms of isotherms, streamlines, velocity and temperature distribution as well as the local and average rate of heat transfer. A comparative study has been conducted for two different base fluids, ethylene glycol and water as well as for two different solids and . It is found that the ethylene glycol-based nanofluid is superior to the water-based nanofluid for heat transfer enhancement.

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