modelDynamicReliefValve
Dynamic relief valve
Information
## Copyright © EDF 2002 - 2026
## ThermoSysPro Version 4.2
This component model is documented in Sect. 13.13 of the ThermoSysPro book.
Parameters
| Type | Name | Default | Description |
|---|
| Units.SI.AbsolutePressure | Popen | 3e5 | Pressure that opens the valve |
| Units.SI.AbsolutePressure | Pout | 1e5 | Pressure at the valve outlet (for sizing) |
| ThermoSysPro.Units.xSI.Cv | Cvmax | 8005.42 | Maximum Cv [USG/min] |
| Real[:,2] | caract | [0, 0; 1, Cvmax] | Position vs. Cv [USG/min] characteristics (active if mode_caract=1) |
| Units.SI.Area | A1 | 0.1 | Hydraulic area upstream the clapper |
| Units.SI.Area | A2 | 0.125 | Hydraulic area downstream the clapper |
| Units.SI.Area[:,2] | clapper_area | [0, A1; 0.01, A2; 1, A2] | Clapper area as a function of the clapper elevation |
| Real | D | 1 | Damping |
| Units.SI.Mass | m | 1 | Valve mass |
| Units.SI.Length | z_max | 0.1 | Maximum clapper elevation |
| Real | Ke | 62500 | Valve spring stiffness |
| Real | Cd | 0 | Drag coefficient of the clapper |
| Integer | mode_caract | 0 | 0:linear characteristics - 1:characteristics is given by caract[] - 2:characteristics for conic clapper |
| Integer | option_interpolation | 1 | 1: linear interpolation - 2: spline interpolation (active if mode_caract=1) |
| Boolean | mech_steady_state | true | true: start from mechanical steady state - false: start from 0 |
| Units.SI.Length | z0 | 0 | Initial clapper elevation, between 0 and z_max. 0:valve closed - z_max: valve fully open (active if mech_steady_state=false) |
| Units.SI.MassFlowRate | gamma_diff | 1e-4 | Diffusion conductance (active if diffusion=true in neighbouring volumes) |
| Fluid › Fluid properties |
| Units.SI.Density | p_rho | 0 | If > 0, fixed fluid density |
| IF97Region | region | IF97Region.All_regions | IF97 region (active for IF97 water/steam only) |
Revisions
Author
Daniel Bouskela
