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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 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.2020021980
pages 663-682

OUTLINING THE IMPACT OF RAMPED THERMAL AND SOLUTAL CONDITIONS ON MAGNETOHYDRODYNAMIC FREE CONVECTION ROTATING FLOW OF SECOND-GRADE FLUID

Gauri Shanker Seth
Department of Applied Mathematics, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, India
Prashanta Kumar Mandal
Department of Applied Mathematics, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, India
Subharthi Sarkar
Department of Mathematics, Banwarilal Bhalotia College, Asansol, India

RESUMO

An investigation has been carried out to capture the impact of ramped thermal and solutal boundary conditions on rotating magnetohydrodynamic (MHD) heat and mass transfer unsteady flow of a second-grade fluid past an infinite vertical oscillating plate through a porous medium. Analytical expressions for velocity, temperature, and concentration are obtained using Laplace transform technique and their behavior with respect to flow parameters are analyzed through graphs. The expressions for skin friction, rate of heat and mass transfer at the plate are also derived and the computed numerical values are tabulated. Interestingly, a non-monotonic decrease in fluid velocity with the increase in the values of second-grade parameter is reported for the first time in literature. Also, there exists flow separation in the primary flow direction on increasing the solutal buoyancy force or frequency of oscillation for ramped wall temperature and on increasing magnetic field or time for isothermal temperature. Under special cases, obtained results validate with already published results.

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