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On micropolar fluids heated from below in hydromagnetics. (English) Zbl 0826.76029

Summary: The thermal instability of electrically conducting micropolar fluids heated from below in the presence of a uniform vertical magnetic field has been considered. The presence of coupling between thermal and micropolar effects may bring overstability in the system. The magnetic field also introduces oscillatory modes in the system, and the Rayleigh number is found to increase with the increase in magnetic field.

MSC:

76E25 Stability and instability of magnetohydrodynamic and electrohydrodynamic flows
76A05 Non-Newtonian fluids
76W05 Magnetohydrodynamics and electrohydrodynamics
80A20 Heat and mass transfer, heat flow (MSC2010)
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