Effects of rotation and varying gravity on the onset of convection in a porous medium layer: a numerical study
ISSN: 1708-5284
Article publication date: 11 August 2020
Issue publication date: 19 October 2020
Abstract
Purpose
The purpose of this study is to examine the influence of rotation and varying gravitational strength on the onset of thermal convection in a porous medium layer numerically. The porous layer is acted to uniform rotation and inconsistent downward gravitational field which changing with depth from the layer. The authors presented three categories of gravitational strength deviancy, namely, linear, parabolic and exponential.
Design/methodology/approach
The higher-terms Galerkin weighted residual procedure is applied to get the eigenvalue of the problem.
Findings
The results illustrate that both rotation parameter and gravity variation parameter suspend the arrival of convection. The measurement of the convection cells decreases on enhancing the rotation parameter and gravity variation parameter.
Originality/value
It is also found that the scheme is more stable for category exponential, whereas it is more unstable for category parabolic.
Keywords
Acknowledgements
This work was supported by the University of Nizwa.
Citation
Yadav, D. (2020), "Effects of rotation and varying gravity on the onset of convection in a porous medium layer: a numerical study", World Journal of Engineering, Vol. 17 No. 6, pp. 785-793. https://doi.org/10.1108/WJE-03-2020-0086
Publisher
:Emerald Publishing Limited
Copyright © 2020, Emerald Publishing Limited