FEM ConstraintFlowVelocity: Difference between revisions
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==Usage== <!--T:9--> |
==Usage== <!--T:9--> |
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#Click on [[Image:Fem-constraint-flow-velocity.svg|32x32px]] |
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or choose '''Model''' → '''Fluid Constraints''' → {{KEY|[[Image:Fem-constraint-flow-velocity.svg|32x32px]] Constraint flow velocity}} from the top menu |
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#The task panel for constraint flow velocity appears |
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[[File:FEM-constraint-flow-velocity task-panel.png]] |
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# The flow can be described according to the main cartesian components |
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<!--T:48--> |
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* Vector components that are ticked as "unspecified" will be interpolated by the selected solver. |
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** Any vector that should be the result of the solver must be ticked as "unspecified". |
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* If the target face or edge is not aligned with the main cartesian coordinate system, it is possible to tick "normal to boundary". |
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**If "normal to boundary" is ticked, the normal vector to the selected edge or face will be X and it will be oriented away from the mesh domain. |
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*** For example, if a flow of 20 mm/s of air must enter the domain, then after ticking "normal to boundary" the user will have to input -20 mm/s in the "velocity X" field. |
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==Notes== <!--T:10--> |
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<!--T:3--> |
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Revision as of 20:14, 27 May 2020
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FEM ConstraintFlowVelocity |
Menu location |
---|
Model → Fluid constraints → Constraint flow velocity |
Workbenches |
FEM |
Default shortcut |
None |
Introduced in version |
- |
See also |
FEM tutorial |
Description
Applies a flow velocity boundary condition to a face in 3D or to an edge in 2D.
Usage
or choose Model → Fluid Constraints → Constraint flow velocity from the top menu
- The task panel for constraint flow velocity appears
- The flow can be described according to the main cartesian components
- Vector components that are ticked as "unspecified" will be interpolated by the selected solver.
- Any vector that should be the result of the solver must be ticked as "unspecified".
- If the target face or edge is not aligned with the main cartesian coordinate system, it is possible to tick "normal to boundary".
- If "normal to boundary" is ticked, the normal vector to the selected edge or face will be X and it will be oriented away from the mesh domain.
- For example, if a flow of 20 mm/s of air must enter the domain, then after ticking "normal to boundary" the user will have to input -20 mm/s in the "velocity X" field.
- If "normal to boundary" is ticked, the normal vector to the selected edge or face will be X and it will be oriented away from the mesh domain.
Notes
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
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