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Title: Effects of rotation and anisotropy of a porous medium on ferroconvection
Authors: Vaidyanathan, G
Sekar, R
Ramanathan, A
Issue Date: Dec-1998
Publisher: NISCAIR-CSIR, India
Abstract: The ferroconvective instability in a rotating anisotropic porous medium heated from below has been analyzed using both Brinkman and Darcy model for various anisotropic parameter values. To investigate the effect of anisotropicity the system is assumed to have vertical permeability different from that of the permeability along horizontal direction. Linear stability analysis is carried out for both oscillatory as well as stationary modes. It is found that stationary mode is favorable for Darcy model, whereas oscillatory mode is also possible for Brinkman model for large rotation. Further small permeability and large rotation tend to stabilize the system. The vertical anisotropy tend to destabilize the system for both the models. Numerical computations are made and are illustrated graphically.
Page(s): 436-440
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Appears in Collections:IJEMS Vol.05(6) [December 1998]

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