FEM ConstraintHeatflux: Difference between revisions

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# There are several ways to invoke the command:
# Press the {{Button|[[Image:FEM_ConstraintHeatflux.svg|16px]]}} button or choose {{MenuCommand|Model → Thermal Constraints → [[Image:FEM_ConstraintHeatflux.svg|16px]] Constraint heatflux}} from the top menu.
#* Press the {{Button|[[Image:FEM_ConstraintHeatflux.svg|16px]] [[FEM_ConstraintHeatflux|ConstraintHeatflux]]}} button.
# In the 3D-view select the face(s) the constraint should be applied to.
#* Select the {{MenuCommand|Model → Thermal Constraints → [[Image:FEM_ConstraintHeatflux.svg|16px]] Constraint heatflux}} option from the menu.
# In the [[3D_view|3D view]] select the face(s) the constraint should be applied to.
# Enter the desired surface temperature, film coefficient and environment temperature.
# Enter the desired surface temperature, film coefficient and environment temperature.



Revision as of 18:23, 26 February 2021

FEM ConstraintHeatflux

Menu location
Model → Thermal Constraints → Constraint heatflux
Workbenches
FEM
Default shortcut
None
Introduced in version
-
See also
FEM tutorial

Description

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 T0 . The convective heat flux q will satisfy: q = h(T -T0)

Usage

  1. There are several ways to invoke the command:
    • Press the ConstraintHeatflux button.
    • Select the Model → Thermal Constraints → Constraint heatflux option from the menu.
  2. In the 3D view select the face(s) the constraint should be applied to.
  3. Enter the desired surface temperature, film coefficient and environment temperature.

Notes

  1. 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