FEM EquationHeat: Difference between revisions

Revision as of 22:57, 13 August 2022

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This equation describes the heat transfer in rigid and fluid bodies.

After adding an Elmer solver as described here, select it in the tree view.
Now either use the toolbar button or the menu Solve → Heat equation.
Change the equation's solver settings or the general solver settings if necessary.

For the general solver settings, see the Elmer solver settings.

The heat equation provides these special settings:

DataBubbles: There is also a residual-free-bubbles formulation of the stabilized finite-element method. It is more accurate and does not include any ad hoc terms. However, it may be computationally more expensive. If both DataBubbles and Data Stabilize are false, no stabilization is used and then the results might easily be nonsensical.

Materials: Solid, Fluid, Nonlinear mechanical, Reinforced (concrete); Material editor

Element geometry: Beam (1D), Beam rotation (1D), Shell (2D), Fluid flow (1D)

Constraints

Mechanical: Fixed, Displacement, Contact, Tie, Spring, Force, Pressure, Centrif, Self weight

Mesh: Mesh Netgen, Mesh GMSH, Mesh boundary layer, Mesh region, Mesh group, Nodes set, Mesh to mesh

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

Utilities: Clipping plane, Remove clipping planes, Open FEM examples; Mesh clear, Mesh display info

Additional: Preferences; FEM Install, FEM Mesh, FEM Solver, FEM CalculiX, FEM Concrete; FEM Element Types

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@@ Line 25: / Line 25: @@
 <!--T:2-->
+This equation describes the heat transfer in rigid and fluid bodies.
-ToDo
-==Usage== <!--T:9-->
+==Usage==
+# After adding an Elmer solver as described [[FEM_SolverElmer#Equations|here]], select it in the [[Tree_view|tree view]].
-<!--T:3-->
+# Now either use the toolbar button [[Image:FEM_EquationHeat.svg|24px]] or the menu {{MenuCommand|Solve → Heat equation}}.
-<br />
+# Change the [[#Solver_Settings|equation's solver settings]] or the [[FEM_SolverElmer_SolverSettings|general solver settings]] if necessary.
+==Solver Settings==
+For the general solver settings, see the [[FEM_SolverElmer_SolverSettings|Elmer solver settings]].
+The heat equation provides these special settings:
+* {{PropertyData|Bubbles}}: There is also a residual-free-bubbles formulation of the stabilized finite-element method. It is more accurate and does not include any ad hoc terms. However, it may be computationally more expensive. If both {{PropertyData|Bubbles}} and {{PropertyData| [[FEM_SolverElmer_SolverSettings#Base|Stabilize]]}} are ''false'', no stabilization is used and then the results might easily be nonsensical.