modelConvection_flatWall_L2

All Geo || L2 || Convection Flat Wall
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Extends from ClaRa.Basics.ControlVolumes.Fundamentals.HeatTransport.Gas_HT.Convection.HeatTransfer_L2, ClaRa.Basics.ControlVolumes.Fundamentals.HeatTransport.HeatTransferBaseGas_only (Partial heat transfer model for only Gas-type HT models).

Information

Model description: A correlation for convective heat transfer at a flat surface

FEATURES

  • This model uses TILMedia
  • Equations according to: VDI-Wärmeatlas: 10.bearbeitete und erweiterte Auflage, 2006, chapter Gd1-5

 

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
Stringgas (from HeatTransferBaseGas)"true"
BooleanuseHomotopy (from HeatTransfer_L2)
IntegerHT_type0
IntegerheatSurfaceAlloc1To be considered heat transfer area
ClaRa.Basics.Units.Lengthlength_charif geo.flowOrientation == ClaRa.Basics.Choices.GeometryOrientation.vertical then geo.height else geo.lengthCharacteristic length
Heat Transfer
StringtemperatureDifference (from HeatTransfer_L2)"Logarithmic mean - smoothed"Temperature Difference

Connectors

TypeNameDefaultDescription
ClaRa.Basics.Interfaces.HeatPort_aheat (from HeatTransfer_L2)

Components

TypeNameDefaultDescription
ClaRa.Basics.Records.IComGas_L2iCom (from HeatTransfer_L2)
RealCF_fouling (from HeatTransfer_L2)0.8Scaling factor accounting for the fouling of the wall
Units.TemperatureDelta_T_wi (from HeatTransfer_L2)Temperature difference between wall and fluid inlet temperature
Units.TemperatureDelta_T_wo (from HeatTransfer_L2)Temperature difference between wall and fluid outlet temperature
Units.TemperatureDelta_T_mean (from HeatTransfer_L2)Mean temperature
Units.TemperatureDelta_T_U (from HeatTransfer_L2)Upper temperature difference
Units.TemperatureDelta_T_L (from HeatTransfer_L2)Lower temperature difference
ClaRa.Basics.Units.CoefficientOfHeatTransferalpha
ClaRa.Basics.Units.VelocitywFlue gas velocity
RealNu_lamNusselt number laminar
RealNu_turbNusselt number turbulent
RealNu_l0Nusselt number
RealReReynolds number

Revisions

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