modelPipeFlowVLE_L2_Simple

A 1D tube-shaped control volume considering one-phase and two-phase heat transfer in a straight pipe with static momentum balance and simple energy balance.

Extends from Basics.ControlVolumes.FluidVolumes.VolumeVLE_L4 (A 1D tube-shaped control volume considering one-phase and two-phase heat transfer in a straight pipe with static momentum balance and simple energy balance.), ClaRa.Basics.Icons.Pipe_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

TypeNameDefaultDescription
Units.DensityMassSpecific[geo.N_cv]rho_nom (from VolumeVLE_L4)TILMedia.VLEFluid.MixtureCompatible.Functions.density_phxi(medium, p_nom, h_nom)Nominal density
IntegerN_cv1
Basics.Units.Length[N_cv]Delta_x{length*N_passes}
Fundamental Definitions
TILMedia.VLEFluid.Types.BaseVLEFluidmedium (from VolumeVLE_L4)simCenter.fluid1Medium in the component
BooleanfrictionAtInlet (from VolumeVLE_L4)falseTrue if pressure loss between first cell and inlet shall be considered
BooleanfrictionAtOutlet (from VolumeVLE_L4)falseTrue if pressure loss between last cell and outlet shall be considered
Nominal Values
Units.Pressure[geo.N_cv]p_nom (from VolumeVLE_L4)ones(geo.N_cv)*1e5Nominal pressure
Units.EnthalpyMassSpecific[geo.N_cv]h_nom (from VolumeVLE_L4)ones(geo.N_cv)*1e5Nominal specific enthalpy for single tube
Units.MassFlowRatem_flow_nom (from VolumeVLE_L4)100Nominal mass flow w.r.t. all parallel tubes
Units.PressureDifferenceDelta_p_nom (from VolumeVLE_L4)1e4Nominal pressure loss w.r.t. all parallel tubes
Initialisation
IntegerinitOption (from VolumeVLE_L4)0Type of initialisation
Units.EnthalpyMassSpecific[geo.N_cv]h_start (from VolumeVLE_L4)ones(geo.N_cv)*800e3Initial specific enthalpy for single tube
Units.Pressure[geo.N_cv]p_start (from VolumeVLE_L4)ones(geo.N_cv)*1e5Initial pressure
Units.MassFraction[medium.nc - 1]xi_start (from VolumeVLE_L4)zeros(medium.nc - 1)Initial composition
Initialisation › Model Settings
BooleanuseHomotopy (from VolumeVLE_L4)simCenter.useHomotopytrue, if homotopy method is used during initialisation
Summary and Visualisation
BooleanshowExpertSummary (from VolumeVLE_L4)simCenter.showExpertSummaryTrue, if an extended summary shall be shown, else false
BooleanshowData (from VolumeVLE_L4)falseTrue, if a data port containing p,T,h,s,m_flow shall be shown, else false
BooleancontributeToCycleSummarysimCenter.contributeToCycleSummaryTrue if component shall contribute to automatic efficiency calculation
BooleanheatFlowIsLosstrueTrue if negative heat flow is a loss (not a process product)
Geometry
Basics.Units.Lengthlength1Length of the pipe (one pass)
Basics.Units.Lengthdiameter_i0.1Inner diameter of the pipe
Basics.Units.Lengthz_in0.1Height of inlet above ground
Basics.Units.Lengthz_out0.1Height of outlet above ground
IntegerN_tubes1Number Of parallel pipes
IntegerN_passes1Number of passes of the tubes

Connectors

TypeNameDefaultDescription
ClaRa.Basics.Interfaces.FluidPortIninlet (from VolumeVLE_L4)Inlet port
ClaRa.Basics.Interfaces.FluidPortOutoutlet (from VolumeVLE_L4)Outlet port
ClaRa.Basics.Interfaces.HeatPort_a[geo.N_cv]heat (from VolumeVLE_L4)
Basics.Interfaces.EyeOuteye

Components

TypeNameDefaultDescription
Stringcomplexity (from ComplexityLevel)"??"
ClaRa.SimCentersimCenter (from VolumeVLE_L4)
Summarysummary (from VolumeVLE_L4)
PressureLosspressureLoss (from VolumeVLE_L4)Pressure loss model
HeatTransferheatTransfer (from VolumeVLE_L4)heat transfer model
Geometrygeo (from VolumeVLE_L4)
MechanicalEquilibriummechanicalEquilibrium (from VolumeVLE_L4)Mechanical equilibrium model
ClaRa.Basics.Interfaces.Connected2SimCenterconnected2SimCenter

Revisions

For revisions please consult the html-documentation shipped with ClaRa.