Abstract
In this paper, we have studied the onset of convection in a rotating binary nanofluid layer saturated by a porous medium using Darcy-Brinkman model. Normal mode technique and Galerkin type weighted residual method are used to solve conservation equations. For analytical study, valid approximations are made in the complex equations for oscillatory convection to get useful results. Top heavy distribution of nanoparticles destabilizes the layer significantly and oscillatory motions are not possible. The problem is studied numerically for water based nanofluids with alumina, copper and silver nanoparticles using Mathematica software and results are shown graphically. The Coriolis force term due to the presence of rotation stabilizes the system while Darcy number destabilizes/stabilizes the layer for small/large values of wave number.
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