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

Volumes:
Volume 24, 2021 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.v17.i2.30
pages 117-128

EFFECT OF g-JITTER ON THE ONSET OF DOUBLE-DIFFUSIVE CONVECTION IN FLUID/POROUS LAYER

Mahantesh S. Swamy
Department of Mathematics, Government College, Gulbarga 585 105, India

RESUMO

Linear stability analysis of double-diffusive convection in a binary fluid layer/saturated porous layer is performed. The prime objective of this study is to investigate the influence of time-periodic vertical vibrations on the onset threshold. The regular perturbation method is used to compute critical Rayleigh number. The first nontrivial correction to the critical Rayleigh number is calculated as a function of frequency of modulation, solute Rayleigh number, Lewis number, Prandtl number, Darcy number, normalized porosity, and viscosity ratio. In the degenerate cases of Brinkman model the results of Darcy porous layer and viscous fluid layer are recovered, respectively, for very small and large Darcy number. In general, gravity modulation exhibits a stabilizing effect Effective control of convection is achieved by proper tuning of governing parameters. The results of this study are useful in the areas of crystal growth in microgravity conditions and also in bridging the gap between the results of Darcy and viscous fluid layer limits.


Articles with similar content:

Effect of Gravity Modulation on the Onset of Thermal Convection in Rotating Viscoelastic Fluid and Porous Layer
International Journal of Fluid Mechanics Research, Vol.39, 2012, issue 6
S . N. Gaikwad, Irfana Begum
THE ONSET OF CONVECTION IN A GRAVITY-MODULATED VISCOELASTIC FLUID-SATURATED ANISOTROPIC POROUS LAYER
Special Topics & Reviews in Porous Media: An International Journal, Vol.4, 2013, issue 1
W. Sidram, I. S. Shivakumara, Mahantesh S. Swamy
CONVECTING THRESHOLD IN NANOFLUID DRIVEN BY CENTRIFUGAL FORCES IN A ROTATING ANNULAR HELE-SHAW
Computational Thermal Sciences: An International Journal, Vol.9, 2017, issue 1
L. Bammou, S. Aniss, M. Kriraa, K. Souhar, M'barek Feddaoui, S. Alami, J. Bouchgl
Effect of Thermal Modulation on the Onset of Centrifugally Driven Convection in a Rotating Vertical Porous Layer Placed Far Away from the Axis of Rotation
Journal of Porous Media, Vol.12, 2009, issue 3
Om P. Suthar, Beer S. Bhadauria
On Stationary and Oscillatory Modes of Flow Instability in a Rotating Porous Layer during Alloy Solidification
Journal of Porous Media, Vol.6, 2003, issue 3
Daniel N. Riahi