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Journal of Porous Media
インパクトファクター: 1.49 5年インパクトファクター: 1.159 SJR: 0.504 SNIP: 0.671 CiteScore™: 1.58

ISSN 印刷: 1091-028X
ISSN オンライン: 1934-0508

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Journal of Porous Media

DOI: 10.1615/JPorMedia.v13.i9.20
pages 779-798

MAGNETOGRAVITATIONAL INSTABILITY OF THERMALLY CONDUCTING ROTATING VISCOELASTIC FLUID WITH HALL CURRENT IN BRINKMAN POROUS MEDIUM

Mohamed F. El-Sayed
Department of Mathematics, Faculty of Education, Ain Shams University, Heliopolis (Roxy), Cairo, Egypt; Department of Mathematics, College of Science, Qassim University, P. O. Box 6644, Buraidah 51452, Saudi Arabia
R. A. Mohamed
Department of Physics, Faculty of Education, Ain Shams University, Heliopolis, Roxy, Cairo; Department of Mathematics, Faculty of Sciences, South Valley University, Qena, Egypt

要約

Magnetohydrodynamic instability of a self-gravitating, thermally finitely conducting, Rivlin-Ericksen viscoelastic fluid rotating in a general direction through a Brinkman porous medium in the presence of Hall current and vertical magnetic field was investigated. A general dispersion relation has been derived through relevant linearized perturbation equations. The cases when the axes of rotation were parallel or perpendicular to the direction of magnetic field were investigated separately for both longitudinal and transverse wave propagations. It has been observed that a condition of instability is determined by Jean's criterion in its modified form. The effects of various parameters on the stability of this system are studied numerically, and they showed that different behaviors depend on the corresponding case, as summarized in the Conclusions section.


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