q 0.04 Optimization parameter
Da 1e-4 Darcy number
L 1[mm] Length scale
c_in 1[mol/m^3] Concentration at inlet
k_a 0.25[1/s] Reaction rate coefficient
delta_p 0.25[Pa] Pressure drop
vol 3*L*6*L Volume of the reacting domain
D 3e-8[m^2/s] Diffusion coefficient