Abstract
The Darcy-Lapwood-Brinkman model with the Boussinesq approximation is used to study Kuppers-Lortz (KL) instability in the nonlinear regime of rotating Rayleigh-Benard convection in a sparsely packed porous medium near the onset of stationary convection. The threshold Taylor numbers and critical angles for the onset of KL instability are obtained for different values of Λ, M for finite Prandtl numbers (1.5≤Pr≤100). Heat transfer is studied from Nusselt number at the onset of stationary convection.
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