1. The problem statement, all variables and given/known data Using Darcy’s law, plus another appropriate relationship, derive a single equation for the pressure distribution in a porous material. Your equation should be stated in terms of generic operators (i.e. without assuming any specific coordinate system) and allow for the fact that the permeability K may vary with position, although you can assume that μ is constant. 2. Relevant equations Darcy's Law: μ = -K/μ ∇ρ Where the fluid velocity vector and the pressure are denoted by μ and p, respectively, K is known as the permeability (which is a property only of the porous material), and μ is the flowing fluid’s dynamic viscosity. 3. The attempt at a solution I attempted to create a modified equation using darcy's and navier-stokes but can't seem to put all the pieces together. Can anyone point me in the right direction?