modelQuadraticNominalPoint
Quadratic|Nominal operation point | subcritical flow
Extends from ClaRa.Components.VolumesValvesFittings.Valves.Fundamentals.GenericPressureLoss, ClaRa.Basics.Icons.Delta_p.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real[:,:] | CL_valve | [0, 0; 1, 1] | |Valve Characteristics|Effective apperture as function of valve position in p.u. |
| Real | Kvs | 3600*m_flow_nom/rho_in_nom*sqrt(rho_in_nom/1000*1e5/Delta_p_nom) | |Valve Characteristics|Flow Coefficient at nominal opening (Delta_p_nom = 1e5 Pa, rho_nom=1000 kg/m^3(cold water)) |
| Basics.Units.Pressure | Delta_p_eps | 100 | |Expert Settings||Small pressure difference for linearisation around zeor flow |
| Basics.Units.Pressure | Delta_p_nom | 1e5 | |Valve Characteristics|Nominal pressure difference for Kv definition |
| Basics.Units.DensityMassSpecific | rho_in_nom | 1000 | |Valve Characteristics|Nominal density for Kv definition |
| Basics.Units.MassFlowRate | m_flow_nom | 1 | |Valve Characteristics|Nominal mass flow rate |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Boolean | checkValve (from GenericPressureLoss) | ||
| Boolean | useHomotopy (from GenericPressureLoss) | ||
| Basics.Units.MassFlowRate | m_flow (from GenericPressureLoss) | ||
| Real | flowIsChoked (from GenericPressureLoss) | 1 if flow is choked, 0 if not | |
| Real | PR_choked (from GenericPressureLoss) | Pressure ratio at which choking occurs | |
| ClaRa.Components.VolumesValvesFittings.Valves.Fundamentals.ICom | iCom | ||
| Real | aperture_ | Effective apperture | |
| Modelica.Blocks.Tables.CombiTable1Dv | ValveCharacteristics | ||
| Basics.Units.PressureDifference | Delta_p | Pressure difference p_in - p_out | |
| Real | Kv | |Valve Characteristics|Flow Coefficient (Delta_p_nom = 1e5 Pa, rho_nom=1000 kg/m^3(cold water)) |