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 |
| Solvers |
|---|
| CalculiX, Elmer |
Description
Defines a temperature boundary condition or, optionally, a concentrated heat flux load.
2D plate subjected to temperature difference
Usage
- 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.
- Press the
- Press the Add button.
- In the 3D View select the objects the boundary condition should be applied to, which can be vertices, edges, or faces. Optionally, press the Remove button and click on the objects that you want to remove from the selection.
- Choose the constraint type and specify its parameter:
- Temperature (default) - temperature boundary condition, enter the Temperature (K)
- CFlux - concentrated heat flux load, enter the Concentrated heat flux (mW) - this value will be divided by the number of nodes on the underlying geometrical entity to achieve a total flux of a given magnitude on that entity
Properties
- DataEnable Amplitude - introduced in 1.1: Enables the use of CalculiX's amplitude for the time variation of the temperature boundary condition. At a given time, magnitude of the boundary condition is multiplied by the amplitude value corresponding to that time. Linear interpolation is used between the specified values. Constant values are used outside of the specified range.
- DataAmplitude Values - introduced in 1.1: Amplitude table in the following format:
time_1, amplitude_value_1 …
- Default is linear increase from 0% at t=0 to 100% at t=1:
0, 0 1, 1
Notes
- The temperature boundary condition uses the *BOUNDARY card in CalculiX.
- The Concentrated heat flux option uses the *CFLUX card in CalculiX.
FEM
- Materials: Solid, Fluid, Nonlinear mechanical, Reinforced (concrete); Material editor
- Element geometry: Beam (1D), Beam rotation (1D), Shell (2D), Fluid flow (1D)
Constraints
- Electromagnetic: Electrostatic potential, Current density, Magnetization
- Geometrical: Plane rotation, Section print, Transform
- Mechanical: Fixed, Displacement, Contact, Tie, Spring, Force, Pressure, Centrif, Self weight
- Thermal: Initial temperature, Heat flux, Temperature, Body heat source
- Overwrite Constants: Constant vacuum permittivity
- Solve: CalculiX Standard, Elmer, Mystran, Z88; Equations: Deformation, Elasticity, Electrostatic, Electricforce, Magnetodynamic, Magnetodynamic 2D, Flow, Flux, Heat; Solver: Solver control, Solver run
- Results: Purge, Show; Postprocessing: Apply changes, Pipeline from result, Warp filter, Scalar clip filter, Function cut filter, Region clip filter, Contours filter, Line clip filter, Stress linearization plot, Data at point clip filter, Filter function plane, Filter function sphere, Filter function cylinder, Filter function box
- Additional: Preferences; FEM Install, FEM Mesh, FEM Solver, FEM CalculiX, FEM Concrete; FEM Element Types
User documentation
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