Hcav 100[mm] "Cavity depth"
epsilon2 0.9 "Porosity of the porous cavity"
Rf2 30[kPa*s/m^2] "Flow resistivity of the porous material in the cavity"
Lv2 300[um] "Viscous characteristic length of the porous cavity"
Lth2 600[um] "Thermal characteristic length of the porous cavity"
tau2 1 "Tortuosity of the porous cavity"