L1 30[cm] "Length of tube"
D1 10[cm] "Diameter of tube"
L2 3[cm] "Length of porous region"
L3 2[cm] "Microphone spacing"
Rf0 87[kN*s/m^4] "Flow resistivity"
Lth0 119[um] "Thermal characteristic length"
Lv0 37[um] "Viscous characteristic length"
tau0 2.52 "Tortuosity factor"
epsilon0 0.97 Porosity
Rf1 100[kN*s/m^4] "Flow resistivity"
Lth1 100[um] "Thermal characteristic length"
Lv1 100[um] "Viscous characteristic length"
tau1 1 "Tortuosity factor"
epsilon1 0.5 Porosity
error 5e-3 "Relative measurement error"
fmin 500[Hz] "Minimum frequency"
fmax 4[kHz] "Maximum frequency"
meshsz 340[m/s]/fmax/18 "Mesh size"