Figure 3From: Thermal instability in a non-Darcy porous medium saturated with a nanofluid and with a convective boundary condition Variation of the oscillatory Rayleigh number with wave number for different value of (a) Bi , M ( Q=1 , Va=0.3 ) and (b) Q , Va ( Bi=1 , M=2 ) with Rn=−3 , Da=1 , N B =10 , Le=500 , N A =5 , σ=3 . Back to article page