modelQuadraticNominalPoint_L4
Extends from ClaRa.Basics.ControlVolumes.Fundamentals.PressureLoss.Gas_PL.PressureLoss_L4 (Gas || PL Base Class).
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 |
|---|---|---|---|
| ClaRa.Basics.Units.DensityMassSpecific | rho_nom | TILMedia.Gas.Functions.density_phxi(iCom.mediumModel, iCom.p_nom, iCom.h_nom, iCom.xi_nom) | |
| Boolean | frictionAtInlet (from PressureLoss_L4) | ||
| Boolean | frictionAtOutlet (from PressureLoss_L4) | ||
| Boolean | useHomotopy (from PressureLoss_L4) | ||
| Units.Length[iCom.N_cv] | Delta_x (from PressureLoss_L4) | geo.Delta_x | |
| Units.Length[iCom.N_cv + 1] | Delta_x_FM (from PressureLoss_L4) | geo.Delta_x_FM | flowModel grid |
| Units.MassFlowRate | m_flow_nom (from PressureLoss_L4) | iCom.m_flow_nom | Nominal mass flow rate |
| Units.PressureDifference | Delta_p_nom (from PressureLoss_L4) | iCom.Delta_p_nom | Nominal pressure loss wrt. all parallel tubes |
| Units.Pressure | Delta_p_smooth | iCom.Delta_p_nom/iCom.N_cv*0.2 | |Small Mass Flows|For pressure losses below this value the square root of the quadratic pressure loss model is regularised |
| Modelica.Fluid.Dissipation.Utilities.Types.PressureLossCoefficient | zeta_TOT | geo.A_cross_FM[1]^2*2*iCom.Delta_p_nom*rho_nom/iCom.m_flow_nom^2 | Pressure loss coefficient for total pipe |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| ClaRa.Basics.Records.IComGas_L3 | iCom (from PressureLoss_L4) | ||
| ClaRa.Basics.ControlVolumes.Fundamentals.Geometry.GenericGeometry_N_cv | geo (from PressureLoss_L4) | ||
| Units.PressureDifference[iCom.N_cv + 1] | Delta_p (from PressureLoss_L4) | Pressure difference | |
| Units.DensityMassSpecific[iCom.N_cv + 1] | rho (from PressureLoss_L4) | Density in FlowModel cells | |
| Units.MassFlowRate[iCom.N_cv + 1] | m_flow (from PressureLoss_L4) |
Revisions
For revisions please consult the html-documentation shipped with ClaRa.