FEM ConstraintTemperature: Difference between revisions

From FreeCAD Documentation
(added a note about cflux)
mNo edit summary
 
(3 intermediate revisions by the same user not shown)
Line 23: Line 23:


<!--T:6-->
<!--T:6-->
Defines a temperature boundary condition.
Defines a temperature boundary condition or, optionally, a concentrated heat flux load.


==Usage== <!--T:3-->
==Usage== <!--T:3-->
Line 31: Line 31:
#* Press the {{Button|[[Image:FEM_ConstraintTemperature.svg|16px]] [[FEM_ConstraintTemperature|Temperature boundary condition]]}} button.
#* Press the {{Button|[[Image:FEM_ConstraintTemperature.svg|16px]] [[FEM_ConstraintTemperature|Temperature boundary condition]]}} button.
#* Select the {{MenuCommand|Model → Thermal boundary conditions and loads → [[Image:FEM_ConstraintTemperature.svg|16px]] Temperature boundary condition}} option from the menu.
#* Select the {{MenuCommand|Model → Thermal boundary conditions and loads → [[Image:FEM_ConstraintTemperature.svg|16px]] Temperature boundary condition}} option from the menu.
# In the [[3D_view|3D view]] select the objects the constraint should be applied to, which can be a vertices (corners), edges, or faces.
# In the [[3D_view|3D view]] select the objects the boundary condition should be applied to, which can be a vertices (corners), edges, or faces.
# Enter a temperature to apply to the objects.
# Enter a temperature to apply to the objects.


Line 37: Line 37:


<!--T:14-->
<!--T:14-->
By default, the constraint defines a temperature. By using the option '''Concentrated heat flux''', one can specify a heat flux value (in mW) in each node belonging to the selected geometrical entity.
By default, this feature defines a temperature boundary condition. By using the option '''Concentrated heat flux''', one can specify a heat flux value (in mW) in each node belonging to the selected geometrical entity.


==Notes== <!--T:5-->
==Notes== <!--T:5-->
Line 43: Line 43:
<!--T:8-->
<!--T:8-->
* The temperature boundary condition uses the *BOUNDARY card in CalculiX. It is explained at http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node163.html
* The temperature boundary condition uses the *BOUNDARY card in CalculiX. It is explained at http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node163.html
* The concentrated heat flux option uses the *CFLUX card in CalculiX: http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node168.html
* The '''Concentrated heat flux''' option uses the *CFLUX card in CalculiX: http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node168.html





Latest revision as of 18:34, 18 November 2023

FEM ConstraintTemperature

Menu location
Model → Thermal boundary conditions and loads → Temperature boundary condition
Workbenches
FEM
Default shortcut
None
Introduced in version
-
See also
FEM tutorial

Description

Defines a temperature boundary condition or, optionally, a concentrated heat flux load.

Usage

  1. There are several ways to invoke the command:
    • Press the Temperature boundary condition button.
    • Select the Model → Thermal boundary conditions and loads → Temperature boundary condition option from the menu.
  2. In the 3D view select the objects the boundary condition should be applied to, which can be a vertices (corners), edges, or faces.
  3. Enter a temperature to apply to the objects.

Option

By default, this feature defines a temperature boundary condition. By using the option Concentrated heat flux, one can specify a heat flux value (in mW) in each node belonging to the selected geometrical entity.

Notes