FEM ConstraintCurrentDensity: Difference between revisions
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|[[FEM_ConstraintElectrostaticPotential|Constraint electrostatic potential]] |
|[[FEM_ConstraintElectrostaticPotential|Constraint electrostatic potential]] |
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|[[ |
|[[FEM_ConstraintMagnetization|Constraint magnetization]] |
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|[[FEM_Workbench|FEM]] |
|[[FEM_Workbench|FEM]] |
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|IconL=FEM_ConstraintElectrostaticPotential.svg |
|IconL=FEM_ConstraintElectrostaticPotential.svg |
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|IconR=FEM_ConstraintMagnetization.svg |
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{{GuiCommand |
{{GuiCommand |
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|Name=FEM ConstraintCurrentDensity |
|Name=FEM ConstraintCurrentDensity |
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|MenuLocation= |
|MenuLocation=Model → Electromagnetic boundary conditions → Current density boundary condition |
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|Workbenches=[[FEM_Workbench|FEM]] |
|Workbenches=[[FEM_Workbench|FEM]] |
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|Version= |
|Version=0.21 |
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|SeeAlso=[[FEM_EquationMagnetodynamic|Magnetodynamic equation]], [[FEM_EquationMagnetodynamic2D|Magnetodynamic 2D equation]] |
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|SeeAlso=[[FEM_Example_Capacitance_Two_Balls|FEM capacitance example]], [[FEM_tutorial|FEM tutorial]] |
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}} |
}} |
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==Description== <!--T: |
==Description== <!--T:3--> |
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Creates a FEM |
Creates a FEM boundary condition for the current density. To be used together with the [[FEM_EquationMagnetodynamic|Magnetodynamic]] and [[FEM_EquationMagnetodynamic2D|Magnetodynamic 2D]] equations. |
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==Usage== <!--T: |
==Usage== <!--T:5--> |
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# |
# Press the {{Button|[[Image:FEM_ConstraintCurrentDensity.svg|16px]] [[FEM_ConstraintCurrentDensity|Current density boundary condition]]}} button or use the menu {{MenuCommand|Model → Electromagnetic boundary conditions → [[Image:FEM_ConstraintCurrentDensity.svg|16px]] Current density boundary condition}}. |
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# In the [[3D_view|3D view]] select the object the |
# In the [[3D_view|3D view]] select the object the boundary condition should be applied to. |
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# Press the {{Button|Add}} button. |
# Press the {{Button|Add}} button. |
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==Options== <!--T: |
==Options== <!--T:7--> |
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The dialog offers the following settings: |
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[[Image:FEM_CurrentDensity_dialog.png|frame|left]] |
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* '''Current density_*_1''': The real/imaginary part of the current density in x-direction in A/m².</br> For other coordinate systems than Cartesian 3D, this will be the first coordinate of the system instead of x. |
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* '''Potential''': The electric potential in V. |
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* '''Current density_*_2''': The real/imaginary part of the current density in y-direction in A/m².</br> For other coordinate systems than Cartesian 3D, this will be the second coordinate of the system instead of y. |
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* '''Potential Constant''': Option to set a constant potential. |
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* '''Current density_*_3''': The real/imaginary part of the current density in z-direction in A/m².</br> For other coordinate systems than Cartesian 3D, this will be the third coordinate of the system instead of z. If the coordinate system has no third coordinate, this setting will be ignored. |
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* '''Farfield / Electric infinity''': Option to make spherical approximation that the volume above the face extends to infinity. |
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* '''Current density_*_*_Disabled''': Whether the corresponding parameter is disabled (assumed as unknown by the solver). |
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* '''Calculate Electric Force''': Option to trigger the calculation of the electric for using the [[FEM_EquationElectricforce|Electricforce]] equation. |
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* '''Capacity Body: ''': Counter of the body (or face) with a capacitance. |
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{{Docnav |
{{Docnav |
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|[[FEM_ConstraintElectrostaticPotential|Constraint electrostatic potential]] |
|[[FEM_ConstraintElectrostaticPotential|Constraint electrostatic potential]] |
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|[[ |
|[[FEM_ConstraintMagnetization|Constraint magnetization]] |
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|[[FEM_Workbench|FEM]] |
|[[FEM_Workbench|FEM]] |
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|IconL=FEM_ConstraintElectrostaticPotential.svg |
|IconL=FEM_ConstraintElectrostaticPotential.svg |
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|IconR= |
|IconR=FEM_ConstraintMagnetization.svg |
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|IconC=Workbench_FEM.svg |
|IconC=Workbench_FEM.svg |
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}} |
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Latest revision as of 23:16, 13 November 2023
FEM ConstraintCurrentDensity |
Menu location |
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Model → Electromagnetic boundary conditions → Current density boundary condition |
Workbenches |
FEM |
Default shortcut |
None |
Introduced in version |
0.21 |
See also |
Magnetodynamic equation, Magnetodynamic 2D equation |
Description
Creates a FEM boundary condition for the current density. To be used together with the Magnetodynamic and Magnetodynamic 2D equations.
Usage
- Press the Current density boundary condition button or use the menu Model → Electromagnetic boundary conditions → Current density boundary condition.
- In the 3D view select the object the boundary condition should be applied to.
- Press the Add button.
Options
- Current density_*_1: The real/imaginary part of the current density in x-direction in A/m².
For other coordinate systems than Cartesian 3D, this will be the first coordinate of the system instead of x. - Current density_*_2: The real/imaginary part of the current density in y-direction in A/m².
For other coordinate systems than Cartesian 3D, this will be the second coordinate of the system instead of y. - Current density_*_3: The real/imaginary part of the current density in z-direction in A/m².
For other coordinate systems than Cartesian 3D, this will be the third coordinate of the system instead of z. If the coordinate system has no third coordinate, this setting will be ignored. - Current density_*_*_Disabled: Whether the corresponding parameter is disabled (assumed as unknown by the solver).
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
- Getting started
- Installation: Download, Windows, Linux, Mac, Additional components, Docker, AppImage, Ubuntu Snap
- Basics: About FreeCAD, Interface, Mouse navigation, Selection methods, Object name, Preferences, Workbenches, Document structure, Properties, Help FreeCAD, Donate
- Help: Tutorials, Video tutorials
- Workbenches: Std Base, Arch, Assembly, CAM, Draft, FEM, Inspection, Mesh, OpenSCAD, Part, PartDesign, Points, Reverse Engineering, Robot, Sketcher, Spreadsheet, Surface, TechDraw, Test Framework
- Hubs: User hub, Power users hub, Developer hub