Figure 1From: 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) Bi , M ( Da=1 , ε=0.7 ) and (b) Da , ε ( Bi=1 , M=2 ) with Va=0.3 , Rn=−3 , N B =10 , Le=500 , N A =5 , σ=3 . Back to article page