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Arabian Journal for Science and Engineering

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24.11.2022 | Research Article-Mechanical Engineering

Double-Diffusive Unsteady Flow in a Roof-Based Air Ventilation System with Variable Prandtl Number

verfasst von: C. N. Mithun, Md. Jahid Hasan, A. K. Azad, Rumman Hossain, M. M. Rahman

Erschienen in: Arabian Journal for Science and Engineering | Ausgabe 9/2023

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Abstract

Double-diffusive mixed convection problem had been a notable topic of research in the last decade. Lack of study is noticed under mixed convection using this double-diffusive in an enclosure specifically for roof-based ventilation systems with unsteady, partially heated conditions. This study investigates the Prandtl number effect in a double-diffusive unsteady flow in a square-shaped room where the upper channel was used for ventilation, and inside the enclosure, the walls are partially heated and mass concentrated. Galerkin residual method was implemented to get the governing equations. The Prandtl number 0.071 ≤ Pr ≤ 7.1 was chosen for the study, changing the dimensionless time 0.1 ≤ τ ≤ 1. The results have been shown in the mode of graphical representation and contour plots to observe the Prandtl number effect in such problem. The velocity streamline, isotherm, isoconcentration plots, heat and mass transfer rate, average fluid temperature and average mass concentration, etc., are shown. Results showed that heat and mass transfer rise with the growth of the Prandtl number. This research would be the guide for the design consideration in such double-diffusive systems like roof-based air ventilation systems with partial heat and mass generation.

Vorheriger Artikel Machine Learning-Based Optimization of a Mini-Channel Heatsink Geometry

Nächster Artikel Effect of Ribs Configurations on Heat Transfer Enhancement for W-Shaped Ribs in a Square Duct

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Titel: Double-Diffusive Unsteady Flow in a Roof-Based Air Ventilation System with Variable Prandtl Number
verfasst von: C. N. Mithun
Md. Jahid Hasan
A. K. Azad
Rumman Hossain
M. M. Rahman
Publikationsdatum: 24.11.2022
Verlag: Springer Berlin Heidelberg
Erschienen in: Arabian Journal for Science and Engineering / Ausgabe 9/2023
Print ISSN: 2193-567X
Elektronische ISSN: 2191-4281
DOI: https://doi.org/10.1007/s13369-022-07453-6

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