FEM ConstraintHeatflux/de: Difference between revisions

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{{Docnav
{{Docnav/de
|[[FEM_ConstraintInitialTemperature|Constraint initial temperature]]
|[[FEM_ConstraintInitialTemperature/de|RandbedingungStarttemperatur]]
|[[FEM_ConstraintTemperature|Constraint temperature]]
|[[FEM_ConstraintTemperature/de| RandbedingungTemperatur]]
|[[FEM_Workbench|FEM]]
|[[FEM_Workbench/de|FEM]]
|IconL=FEM_ConstraintInitialTemperature.svg
|IconL=FEM_ConstraintInitialTemperature.svg
|IconR=FEM_ConstraintTemperature.svg
|IconR=FEM_ConstraintTemperature.svg
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}}
}}


{{GuiCommand
{{GuiCommand/de
|Name=FEM ConstraintHeatflux
|Name=FEM ConstraintHeatflux
|Name/de=FEM RandbedingungWärmestrom
|MenuLocation=Model → Thermal Constraints → Constraint heatflux
|MenuLocation=Modell → Thermische Randbedingungen und Belastungen → Wärmestrombelastung
|Workbenches=[[FEM_Workbench|FEM]]
|SeeAlso=[[FEM_tutorial|FEM tutorial]]
|Workbenches=[[FEM_Workbench/de|FEM]]
|SeeAlso=[[FEM_tutorial/de|FEM-Anleitung]]
}}
}}


==Description==
<span id="Description"></span>
==Beschreibung==


This constraint specifies film heat transfer of a surface at temperature ''T'' and with a film coefficient ''h'' to the environment or sink at temperature ''T<sub>0</sub> ''. The convective heat flux ''q'' will satisfy: '''''q = h(T -T<sub>0</sub>)'''''
Defines a convective heat flux load on a surface at a temperature ''T'' with a film coefficient ''h'' and with the environment (sink) temperature ''T<sub>0</sub>''. The convective heat flux ''q'' will satisfy: '''''q = h(T -T<sub>0</sub>)'''''. Optionally, can also define a regular surface heat flux load.


==Usage==
<span id="Usage"></span>
==Anwendung==


# Es gibt mehrere Möglichkeiten, den Befehl aufzurufen:
# There are several ways to invoke the command:
#* Press the {{Button|[[Image:FEM_ConstraintHeatflux.svg|16px]] [[FEM_ConstraintHeatflux|FEM ConstraintHeatflux]]}} button.
#* Die Schaltfläche {{Button|[[Image:FEM_ConstraintHeatflux.svg|16px]] [[FEM_ConstraintHeatflux/de|Wärmestrombelastung]]}} drücken.
#* Select the {{MenuCommand|ModelThermal Constraints → [[Image:FEM_ConstraintHeatflux.svg|16px]] Constraint heatflux}} option from the menu.
#* Den Menüeintrag {{MenuCommand|ModellThermische Randbedingungen und Belastungen → [[Image:FEM_ConstraintHeatflux.svg|16px]] Wärmestrombelastung}} auswählen.
# In the [[3D_view|3D view]] select the face(s) the constraint should be applied to.
# In der [[3D_view/de|3D-Ansicht]] die Fläche(n) auswählen, auf die die Wärmestrombelastung angewendet werden soll.
# Die gewünschten Werte für Wärmeübergangskoeffizient und Umgebungstemperatur eingeben.
# Enter the desired surface temperature, film coefficient and environment temperature.


==Notes==
===Option===


By default, this feature defines a convective heat flux. By using the option '''Surface heat flux''', one can specify a heat flux value in Watts per surface area (W/m^2).
#The constraint uses the *FILM card in CalculiX. The heatflux constraint is explained at http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node203.html


<span id="Notes"></span>
==Hinweise==


* The heat flux load uses the *FILM card in CalculiX. It is explained at http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node203.html
{{Docnav
* The '''Surface heat flux''' option uses the *DFLUX card in CalculiX: http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node188.html
|[[FEM_ConstraintInitialTemperature|Constraint initial temperature]]

|[[FEM_ConstraintTemperature|Constraint temperature]]
{{Docnav/de
|[[FEM_Workbench|FEM]]
|[[FEM_ConstraintInitialTemperature/de|RandbedingungStarttemperatur]]
|[[FEM_ConstraintTemperature/de| RandbedingungTemperatur]]
|[[FEM_Workbench/de|FEM]]
|IconL=FEM_ConstraintInitialTemperature.svg
|IconL=FEM_ConstraintInitialTemperature.svg
|IconR=FEM_ConstraintTemperature.svg
|IconR=FEM_ConstraintTemperature.svg
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Revision as of 18:45, 20 December 2023

FEM RandbedingungWärmestrom

Menüeintrag
Modell → Thermische Randbedingungen und Belastungen → Wärmestrombelastung
Arbeitsbereich
FEM
Standardtastenkürzel
Keiner
Eingeführt in Version
-
Siehe auch
FEM-Anleitung

Beschreibung

Defines a convective heat flux load on a surface at a temperature T with a film coefficient h and with the environment (sink) temperature T0. The convective heat flux q will satisfy: q = h(T -T0). Optionally, can also define a regular surface heat flux load.

Anwendung

  1. Es gibt mehrere Möglichkeiten, den Befehl aufzurufen:
    • Die Schaltfläche Wärmestrombelastung drücken.
    • Den Menüeintrag Modell → Thermische Randbedingungen und Belastungen → Wärmestrombelastung auswählen.
  2. In der 3D-Ansicht die Fläche(n) auswählen, auf die die Wärmestrombelastung angewendet werden soll.
  3. Die gewünschten Werte für Wärmeübergangskoeffizient und Umgebungstemperatur eingeben.

Option

By default, this feature defines a convective heat flux. By using the option Surface heat flux, one can specify a heat flux value in Watts per surface area (W/m^2).

Hinweise