Figure 2From: Thermal instability in a non-Darcy porous medium saturated with a nanofluid and with a convective boundary condition Variation of the stationary Rayleigh number with wave number for different value of (a) λ , N A ( N B =10 , Le=500 ) and (b) N B , Le ( λ=2 , N A =5 ) with Va=0.3 , Rn=−3 , Da=1 , M=2 , ε=0.7 , N B =10 , Le=500 , N A =5 , σ=3 , Bi=1 . Back to article page