Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
Journal of Porous Media
Fator do impacto: 1.752 FI de cinco anos: 1.487 SJR: 0.43 SNIP: 0.762 CiteScore™: 2.3

ISSN Imprimir: 1091-028X
ISSN On-line: 1934-0508

Volume 23, 2020 Volume 22, 2019 Volume 21, 2018 Volume 20, 2017 Volume 19, 2016 Volume 18, 2015 Volume 17, 2014 Volume 16, 2013 Volume 15, 2012 Volume 14, 2011 Volume 13, 2010 Volume 12, 2009 Volume 11, 2008 Volume 10, 2007 Volume 9, 2006 Volume 8, 2005 Volume 7, 2004 Volume 6, 2003 Volume 5, 2002 Volume 4, 2001 Volume 3, 2000 Volume 2, 1999 Volume 1, 1998

Journal of Porous Media

DOI: 10.1615/JPorMedia.v5.i2.40
9 pages

Moderate Time Scale Linear Stability of Moderate Stefan Number Convection In Rotating Mushy Layers

Saneshan Govender
School of Mechanical Engineering, University of Kwa-Zulu; School of Mechanical Engineering, University of Natal, Durban, South Africa; Eskom Holdings Ltd, Engineering Department (Gas Division), Eskom Enterprises Park, Simba Road, Sunninghill, Johannesburg
Peter Vadasz
Department of Mechanical Engineering, Northern Arizona University, PO Box 15600, Flagstaff, Arizona 86001, USA ; Faculty of Engineering, University of KZ Natal, Durban 4041, South Africa


The solidification of a binary alloy in a mushy layer subject to Coriolis effects is considered. A near-eutectic approximation and large far-field temperature is employed in order to study the dynamics of the mushy layer with a Stefan number of unit order of magnitude. The linear stability theory is used to investigate analytically the Coriolis effect in a rotating mushy layer for both stationary and oscillatory convection for a new time scale proposed by the author. The linear theory established that in contrast to the problem of a stationary mushy layer, rotating the mushy layer has a stabilizing effect on convection. In addition it was found that the critical Rayleigh number and wave number are independent of the Toylor number for the case of oscillatory convection.

Articles with similar content:

Finite Amplitude Analysis of Convection in Rotating Mushy Layers during the Solidification of Binary Alloys
Journal of Porous Media, Vol.6, 2003, issue 2
Saneshan Govender
Finite-Amplitude Analysis of Convection in Rotating Mushy Layers for Small Variations in Retardability
Journal of Porous Media, Vol.7, 2004, issue 3
Saneshan Govender
Effect of Darcy-Prandtl Number on the Stability of Solutal Convection in Solidifying Binary Alloy Systems
Journal of Porous Media, Vol.9, 2006, issue 6
Saneshan Govender
A Nonlinear Stability Analysis of a Rotating Double-Diffusive Magnetized Ferrofluid Saturating a Porous Medium
Heat Transfer Research, Vol.40, 2009, issue 4
Sunil, Poonam Sharma, Amit Mahajan
International Heat Transfer Conference 10, Vol.14, 1994, issue
Chang K. Choi, MinChan Kim