Instability Of A rotating binary nanofluid layer: Darcy model

In this paper, binary nanofluid convection in a rotating porous layer is studied using Darcy model. Normal mode technique and one term Galerkin method are used to solve the conservation equations for the system. Valid approximations are made to study the problem analytically. The critical wave number is found to be independent of the presence of solute and nanoparticles. Top heavy nanofluids are found to have instability through stationary mode and are very unstable as compared to regular fluid. Oscillatory mode of convection comes into existence for bottom heavy fluids and these are more stable than regular fluids. The effects of solute, porosity and rotation parameters on the stability of the fluid layer are presented graphically using the software Mathematica. Titanium dioxide nanoparticles stabilize the water based nanofluid more as compared to silica.