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Coupled Conductive-Convective-Radiative Heat Transfer in Hollow Blocks with Two Air Cells in the Vertical Direction Subjected to an Incident Solar Flux

Mourad Najjaoui1,*, Thami Ait-taleb1, Abdelhalim Abdelbaki2, Zaki Zrikem2, Hassan Chaib1

1 Polydiscilinary Faculty of Ouarzazate, Ibn Zohr University, Ouarzazate, Morocco
2 Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh, Morocco

* Corresponding Author: Mourad Najjaoui. Email:

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

Fluid Dynamics & Materials Processing 2022, 18(5), 1399-1407. https://doi.org/10.32604/fdmp.2022.021760

Abstract

This work presents the results of a set of steady-state numerical simulations about heat transfer in hollow blocks in the presence of coupled natural convection, conduction and radiation. Blocks with two air cells deep in the vertical direction and three identical cavities in the horizontal direction are considered (typically used for building ceilings). Moreover, their outside horizontal surface is subjected to an incident solar flux and outdoor environment temperature while the inside surface is exposed to typical indoor environment conditions. The flows are considered laminar and two-dimensional over the whole range of parameters examined. The conservation equations are solved by means of a finite difference method based on the control volumes approach, relying on the SIMPLE algorithm for what concerns the coupling of pressure and velocity. The effects of the number of cells in the horizontal direction and the thermal conductivity on the heat transfer through the alveolar structure have been investigated. The results show that the number of holes has a significant impact on the value of the overall heat flux through the considered structure.

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Cite This Article

Najjaoui, M., Ait-taleb, T., Abdelbaki, A., Zrikem, Z., Chaib, H. (2022). Coupled Conductive-Convective-Radiative Heat Transfer in Hollow Blocks with Two Air Cells in the Vertical Direction Subjected to an Incident Solar Flux. FDMP-Fluid Dynamics & Materials Processing, 18(5), 1399–1407.



This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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