Magnetohydro-convective instability in a saturated Darcy–Brinkman medium with viscous dissipation

Anil Kumar, D. Bhargavi () and P. G. Siddheshwar
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Anil Kumar: National Institute of Technology
D. Bhargavi: National Institute of Technology
P. G. Siddheshwar: CHRIST (Deemed to Be University)

The European Physical Journal B: Condensed Matter and Complex Systems, 2024, vol. 97, issue 7, 1-13

Abstract: Abstract The influence of dissipation with viscosity on magnetohydro-convective instability in a saturated Darcy–Brinkman medium is examined. The bottom boundary is designated as adiabatic, whereas the top boundary is isothermal. Numerical linear stability analysis investigates normal modes that disturb the horizontal base flow at different inclinations. The case study shows that the most unstable disturbances are horizontal rolls, normal modes characterized by a wave vector perpendicular to the main flow direction. The horizontal rolls are the favored instability mode. Barletta et al. also showed that horizontal rolls are more unstable than any other oblique roll mode in the hydromagnetic scenario. This finding provides insights into the behavior of MHD fluid flow and heat transfer in porous media, with implications for applications in geoscience, engineering, and environmental science. Graphical abstract

Date: 2024
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DOI: 10.1140/epjb/s10051-024-00738-9

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