| Real | temp_p | 313.15 | temperature |
| Real | part_mass_air_p | 1.393e-6 | mass proportion of undissolved air to total mass of mixture |
| Real | e_nom_p | 1e6 | nominal effort |
| Real | f_nom_p | 1e-3 | nominal flow |
| Real | r_min_p | 1e-2*e_nom_p/f_nom_p | minimal resistance |
| Real | r_max_p | 1e6*e_nom_p/f_nom_p | maximal resistance |
| Real | l_p | 1 | length |
| Real | d_p | 0.01 | hydraulic diameter |
| Real | c_p | 1e-8 | compressibility |
| Real | r_p | 1e-6 | relative hydraulic roughness |
| Real | e_0_p | 1e5 | initial pressure |
| Real | f_0_p | 0 | initial flow |
| Integer[2] | hr_par_caus | {2, 2} | constitutive equation causality of hr, par_caus=1(effort out), par_caus=2(flow out) |
| Real[2] | hrt_e_ref | 0.5e5*{1, 1} | reference pressure difference |
| Real[2] | hrt_f_ref | 0.5e-3*{1, 1} | reference volume flow |
| Real[2] | hrt_rho_ref | 854.307*{1, 1} | reference density |
| Real[2] | hrt_p | 2*{1, 1} | volume flow exponent for resistance calculation |
| Integer[2] | hrt_par_caus | {2, 2} | constitutive equation causality of hrt, par_caus=1(effort out), par_caus=2(flow out) |
