modelQuadraticFrictionNominalPointSymetric_TWV
Extends from ClaRa.Components.VolumesValvesFittings.Valves.Fundamentals.Basic_TWV (Basic pressure loss model for three way valves), ClaRa.Components.VolumesValvesFittings.Valves.Fundamentals.TWV_L1, ClaRa.Components.VolumesValvesFittings.Valves.Fundamentals.TWV_L2.
Information
For detailed model documentation please consult the html-documentation shipped with ClaRa.
Authorship and Copyright Statement for original (initial) Contribution
Author:
DYNCAP/DYNSTART development team, Copyright © 2011-2024.References:
For references please consult the html-documentation shipped with ClaRa.
Remarks:
This component was developed by ClaRa development team under the 3-clause BSD License.
Acknowledgements:ClaRa originated from the collaborative research projects DYNCAP and DYNSTART. Both research projects were supported by the German Federal Ministry for Economic Affairs and Energy (FKZ 03ET2009 and FKZ 03ET7060).
CLA:
The author(s) have agreed to ClaRa CLA, version 1.0. See https://claralib.com/pdf/CLA.pdf
By agreeing to ClaRa CLA, version 1.0 the author has granted the ClaRa development team a permanent right to use and modify his initial contribution as well as to publish it or its modified versions under the 3-clause BSD License.
The ClaRa development team consists of the following partners:
TLK-Thermo GmbH (Braunschweig, Germany)
XRG Simulation GmbH (Hamburg, Germany).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real[:,:] | CharLineValve_ (from Basic_TWV) | [0, 0; 1, 1] | |Valve Characteristics|Effective apperture as function of valve position in p.u. |
| Modelica.Blocks.Types.Smoothness | smoothness (from Basic_TWV) | Modelica.Blocks.Types.Smoothness.LinearSegments | |Expert Settings|Numerical Robustness|Smoothness of table interpolation |
| Basics.Units.Pressure[2] | Delta_p_nom | {1e5, 1e5} | |Valve Characteristics|Nominal pressure difference for Kv definition |
| Basics.Units.MassFlowRate[2] | m_flow_nom | {1, 1} | |Valve Characteristics|Nominal mass flow rate |
| Boolean | useStabilisedMassFlow | false | |Expert Settings|Numerical Robustness| |
| Real[2] | 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.DensityMassSpecific | rho_in_nom | 1000 | |Valve Characteristics|Nominal density for Kv definition |
| Expert Settings › Numerical Robustness | |||
| Basics.Units.Time | Tau | 0.001 | Time Constant of Stabilisation |
| Basics.Units.PressureDifference | Delta_p_smooth | 100 | Below this value, root function is approximated linearly |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| ClaRa.Components.VolumesValvesFittings.Valves.Fundamentals.ICom_TWV | iCom (from Basic_TWV) | ||
| Basics.Units.MassFlowRate | m_flow_1 (from Basic_TWV) | Mass flow through straight flange | |
| Basics.Units.MassFlowRate | m_flow_2 (from Basic_TWV) | Mass flow through shunt flange | |
| Real | aperture_ (from Basic_TWV) | Effective apperture | |
| Real[2] | Kv | |Valve Characteristics|Flow Coefficient (Delta_p_nom = 1e5 Pa, rho_nom=1000 kg/m^3(cold water)) | |
| Basics.Units.Pressure[2] | Delta_p | Pressure differences |
Revisions
For revisions please consult the html-documentation shipped with ClaRa.