Enhancement of natural convection heat transfer in concentric annular space using inclined elliptical cylinder
Dublin Core
Title
Enhancement of natural convection heat transfer in concentric annular space using inclined elliptical cylinder
Description
The governing equations of continuity, momentum and energy are numerically solved to study the laminar natural convection heat transfer of Newtonian fluid confined within two concentric cylinders. The inner cylinder is elliptical cross-section with different aspect ratio E = 0.1 to 0.5 and it is considered to be hot, whereas the outer cylinder is circular and it is supposed to be cold. The annular spacing between the cylinders is defined based on radii ratio (RR = 2.5). Also, the inner cylinder is inclined with an inclination angle (θ = 0 to 90). The main purpose of this study is to determine the effects of inclination angle (θ = 0° to 90°), aspect ratio of inner cylinder (E = 0.1 to 0.5), Prandtl number (Pr = 0.71 and 7.01) and Rayleigh number (Ra = 103 to 105) on fluid flow and heat transfer rate. The flow patterns and temperature distributions are potted in terms of streamlines and isotherms respectively. The obtained results showed that increase in inclination angle enhances the heat transfer rate of inner cylinder for all values of aspect ratio. Also, for the inclination angle (θ = 90°), the decrease in aspect ratio (E) improves the heat transfer rate of inner cylinder.
Creator
Laidoudi, Houssem
Source
Journal of Naval Architecture and Marine Engineering; Vol. 17 No. 2 (2020); 89-99
2070-8998
1813-8535
Publisher
Association of Naval Architects and Marine Engineers
Date
2020-12-22
Rights
Copyright (c) 2020 Journal of Naval Architecture and Marine Engineering
Relation
Format
application/pdf
Language
eng
Type
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Identifier
Citation
Houssem Laidoudi, Enhancement of natural convection heat transfer in concentric annular space using inclined elliptical cylinder, Association of Naval Architects and Marine Engineers, 2020, accessed November 22, 2024, https://igi.indrastra.com/items/show/3319