Ma 0.0 "Flow Mach number"
c0 343[m/s] "Speed of sound"
Uin Ma*c0 "Inflow velocity"
Lin 60[cm] "Inlet duct length"
Lout 50[cm] "Outlet duct length"
Lpml 10[cm] "PML domain length"
Dmain 4.859[cm] "Main duct diameter"
Dneck 4.044[cm] "Neck diameter"
Lneck 32.47[cm]-24.42[cm] "Neck length"
Dreson 15.32[cm] "Resonator volume diameter"
Lreson 24.42[cm] "Resonator volume length"
Lsource 5[cm] "Source domain length"
f0 200[Hz] "Maximal frequency"
dvisc 0.22[mm]*sqrt(100[Hz]/f0) "Viscous boundary layer thickness at f0"