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Numerical Study of Natural Convective Heat Transfer in an Air Filled Square Cavity Heated from Below and Symmetrically Cooled from the Sides with a Partition in the Hot Wall

Farah Zemani-Kaci*, Amina Sabeur-Bendhina

Laboratoire des Sciences et Ingénierie Maritimes, Faculté de Génie Mécanique, USTO-MB, BP 1505 El M’naouer, Oran, 31000, Algérie

* Corresponding Author: Farah Zemani-Kaci. Email: email

(This article belongs to this Special Issue: Materials and Energy an Updated Image for 2021)

Fluid Dynamics & Materials Processing 2023, 19(2), 513-539. https://doi.org/10.32604/fdmp.2022.021974

Abstract

A two-dimensional numerical study of laminar natural convection in a square enclosure filled with air with a wall partially heated on the bottom is presented. The heat source is located on the lower wall with different heated widths varied from 20 to 80%(ε = 0.2–0.8) of the total width of the lower wall and different heights h = H/4 and H/2 of the partition. The effect of the partition height on the main system dynamics is investigated through solution of the two-dimensional Navier–Stokes equations and the energy equation by means of a finite volume method based on the SIMPLE algorithm. The influence of the Rayleigh number (Ra = 103 to 106) and the hot wall length is also examined. It is shown that the average Nusselt number grows when ε increases and when h decreases. For a given value of ε and h, the average Nusselt number increases as Ra increases. It is concluded that the partition height causes a decrease in the average Nusselt number.

Graphical Abstract

Numerical Study of Natural Convective Heat Transfer in an Air Filled Square Cavity Heated from Below and Symmetrically Cooled from the Sides with a Partition in the Hot Wall

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Cite This Article

Zemani-Kaci, F., Sabeur-Bendhina, A. (2023). Numerical Study of Natural Convective Heat Transfer in an Air Filled Square Cavity Heated from Below and Symmetrically Cooled from the Sides with a Partition in the Hot Wall. FDMP-Fluid Dynamics & Materials Processing, 19(2), 513–539.



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