modelNusseltPipe1ph_L2
Extends from ClaRa.Basics.ControlVolumes.Fundamentals.HeatTransport.VLE_HT.HeatTransfer_L2 ( L2 || HT-BaseClass), ClaRa.Basics.ControlVolumes.Fundamentals.HeatTransport.TubeTypeVLE_L2 (Partial heat transfer model for tube-type models).
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 |
|---|---|---|---|
| String | vle (from HeatTransferBaseVLE) | "true" | |
| Boolean | useHomotopy (from HeatTransfer_L2) | ||
| String | tube (from TubeTypeVLE_L2) | "true" | |
| Integer | boundary | 1 | Choice of heat transfer boundary condition, relevant for laminar flow heat transfer |
| Integer | correlation | 2 | Cprrelation type |
| Real | CF_alpha_tubes | 1 | Correction factor due to fouling |
| Integer | heatSurfaceAlloc | 1 | To be considered heat transfer area |
| ClaRa.Basics.Units.CoefficientOfHeatTransfer | alpha_nom | CF_alpha_tubes*(sm(laminar, turbulent, Re_nom)*alpha_lam_nom + sm(turbulent, laminar, Re_nom)*alpha_turb_nom) | Nominal HTC (used for homotopy) |
| ClaRa.Basics.Units.ThermalResistance | HR_nom | 1/(alpha_nom*geo.A_heat_CF[heatSurfaceAlloc]) | Nominal convective heat resistance |
| Heat Transfer | |||
| String | temperatureDifference (from HeatTransfer_L2) | "Logarithmic mean - smoothed" | Temperature Difference |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| ClaRa.Basics.Interfaces.HeatPort_a | heat (from HeatTransfer_L2) |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| ClaRa.Basics.Records.IComVLE_L2 | iCom (from HeatTransfer_L2) | ||
| Units.Temperature | Delta_T_wi (from HeatTransfer_L2) | Temperature difference between wall and fluid inlet temperature | |
| Units.Temperature | Delta_T_wo (from HeatTransfer_L2) | Temperature difference between wall and fluid outlet temperature | |
| Units.Temperature | Delta_T_mean (from HeatTransfer_L2) | Mean temperature difference used for heat transfer calculation | |
| Units.Temperature | Delta_T_U (from HeatTransfer_L2) | Upper temperature difference | |
| Units.Temperature | Delta_T_L (from HeatTransfer_L2) | Lower temperature difference | |
| ClaRa.SimCenter | simCenter | ||
| ClaRa.Basics.ControlVolumes.Fundamentals.Geometry.PipeGeometry | geo | ||
| ClaRa.Basics.Units.CoefficientOfHeatTransfer | alpha | Heat transfer coefficient used for heat transfer calculation | |
| ClaRa.Basics.Units.CoefficientOfHeatTransfer | alpha_lam | Heat transfer coefficient - laminar part | |
| ClaRa.Basics.Units.CoefficientOfHeatTransfer | alpha_turb | Heat transfer coefficient - turbolent part | |
| ClaRa.Basics.Units.ThermalResistance | HR | Convective heat resistance | |
| Real | failureStatus | 0== boundary conditions fulfilled | 1== failure >> check if still meaningfull results | |
| ClaRa.Basics.Units.MassFlowRate | m_flow | Mass flow rate | |
| ClaRa.Basics.Units.Velocity | velocity | Mean velocity | |
| ClaRa.Basics.Units.ReynoldsNumber | Re | Reynolds number | |
| ClaRa.Basics.Units.PrandtlNumber | Pr | Prandtl number |
Revisions
For revisions please consult the html-documentation shipped with ClaRa.