Open Access

ARTICLE

THERMAL-HYDRAULIC ANALYSIS OF TRANSIENT CONJUGATE HEATING BETWEEN HEMI-SPHERICAL BODY AND AIR

by

a College of Engineering- University of Kerbala –Iraq
b Mechanical Engineering Department, College of Engineering, University of Babylon, Babylon City, Iraq.
c College of Engineering, Department of Mechanical Engineering, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, Saudi Arabia
d Research Laboratory of Ionized Backgrounds and Reagents Studies (EMIR), Preparatory Institute for Engineering Studies of Monastir (IPEIM), University of Monastir, Monastir City, Tunisia.
e Higher School of Sciences and Technology of Hammam Sousse (ESSTHS), Department of Physics, University of Sousse, Tunisia.
f Faculty of Computer Science and Information Technology, Superior University, Lahore 54000, Pakistan
g Mechanical Engineering Department, College of Engineering inWadiAddwasir, Prince Sattam Bin Abdulaziz University, Alkharj, 11492, KSA.
* Corresponding author email: oubeytaha@hotmail.com

Frontiers in Heat and Mass Transfer 2022, 19, 1-6. https://doi.org/10.5098/hmt.19.21

Abstract

Convection and conduction in a fluid flow and a rigid body in contact with each other often occur in engineering situations, resulting in unsteady conjugate heat transfer (CHT). Although the analytical solutions to the separate conduction and convection issues are surprisingly straightforward, the combined conjugate heat transfer problem is substantially more complex to solve. This study investigates the CHT of a fluid (air) passing through an unbounded hemisphere. The hemisphere produces heat at a predictable and regular pace. The governing equations are solved using a finite volume system (FVS) using ANSYS Fluent V.16.0, with axisymmetric, no normal convection, and stable physical characteristics assumed. The findings showed The rise in air temperature will result in a more even dispersion of temperature.The temperature distribution will be narrowed as airflow velocity increases. Heat flow increases in the sphere, resulting in a greater temperature gradient over the object's surface.As airflow increases, so does the dispersion of flow rates. Increasing the pace of airflow will lead to an increase in air pressure distribution.

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Keywords

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