Uin 10[m/s] "Background mean flow average velocity at the inlet"
p0 1[atm] "Background mean flow pressure"
rho0 998[kg/m^3] "Background mean flow density"
c0 1481[m/s] "Speed of sound"
f0 2.5e6[Hz] "Carrier signal frequency"
omega0 2*pi*f0 "Carrier signal angular frequency"
T0 1/f0 "Carrier signal period"
lam0 c0/f0 "Carrier signal wavelength"
D 5[mm] "Main duct diameter"
L 4*D "Main duct length"
alpha 45[deg] "Transducer tube pitch angle"
D_transducer 2[mm] "Transducer diameter"
L_transducer D/cos(alpha)+3/2*D_transducer/cos(alpha)*tan(alpha) "Transducer duct length"
L2 D/sin(alpha) "Transducer duct length in main flow"
L1 0.5*(L_transducer-L2) "Transducer duct length of side branches"
nLx cos(alpha) "Unit vector in transducer duct direction (x-component)"
nLy 0 "Unit vector in transducer duct direction (y-component)"
nLz sin(alpha) "Unit vector in transducer duct direction (z-component)"
A 0.1[mm/s] "Velocity signal amplitude"
Nlam L_transducer/lam0 "Number of wavelengths across transducer duct"
DT_calc 5.01E-8[s] "Calculated time difference (known flow)"
DT_simulated 4.86E-8[s] "Simulated time difference (from 1D graph)"