FEM ConstraintInitialFlowVelocity: Difference between revisions

Latest revision as of 23:22, 13 November 2023

Other languages:

Constraint magnetization

Constraint initial pressure

FEM

Menu location
FEM ConstraintInitialFlowVelocity
Model → Fluid boundary conditions → Initial flow velocity condition
Workbenches
FEM
Default shortcut
None
Introduced in version
-
See also
Constraint flow velocity, Constraint initial pressure

Description

Creates an initial flow velocity condition for a fluid flow analysis.

Usage

Press the Initial flow velocity condition button or select the menu Model → Fluid boundary conditions → Initial flow velocity condition.
Enter an initial flow velocity value for the analysis. The value is entered as a combination of the 3 main cartesian vectors components (X,Y,Z).
For a 3D analysis, select a 'solid' (body) from your model, for a 2D analysis select a face. However, it is also possible to select a face (e.g. the inlet of a pipe) in 3D or an edge in 2D.

Formulas

For a description how to input formulas, see section Formulas in the page for the Flow velocity constraint.

Notes

In simple analyses, it is not necessary to specify the initial flow velocity, however it is recommended as best practice.

Constraint magnetization

Constraint initial pressure

FEM

FEM Analysis

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

Fluid: Initial flow velocity, Initial pressure, Flow velocity

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

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

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, Start, Surface, TechDraw, Test Framework, Web

Addons: Addon Manager, External workbenches, Scripting and macros

Hubs: User hub, Power users hub, Developer hub

@@ Line 1: / Line 1: @@
 <languages/>
-{{UnfinishedDocu{{#translation:}}}}
 <translate>
 <!--T:4-->
 {{Docnav
-|[[FEM_ConstraintElectrostaticPotential|Constraint electrostatic potential]]
+|[[FEM_ConstraintMagnetization|Constraint magnetization]]
-|[[FEM_ConstraintFluidBoundary|Constraint fluid boundary]]
+|[[FEM_ConstraintInitialPressure|Constraint initial pressure]]
+|[[FEM_Workbench|FEM]]
-|[[FEM_Module|FEM]]|IconL=Fem-constraint-electrostatic-potential.svg
+|IconL=FEM_ConstraintMagnetization.svg
+|IconR=FEM_ConstraintInitialPressure.svg
 |IconC=Workbench_FEM.svg
-|IconR=FEM_ConstraintFluidBoundary.png
 }}
@@ Line 14: / Line 15: @@
 {{GuiCommand
 |Name=FEM ConstraintInitialFlowVelocity
+|MenuLocation=Model → Fluid boundary conditions → Initial flow velocity condition
-|Icon=Fem-constraint-initial-flow-velocity.svg
+|Workbenches=[[FEM_Workbench|FEM]]
-|MenuLocation= Model → Fluid constraints → Constraint initial flow velocity
+|SeeAlso=[[FEM_ConstraintFlowVelocity|Constraint flow velocity]], [[FEM_ConstraintInitialPressure|Constraint initial pressure]]
-|Workbenches=[[Fem Workbench|FEM]]
-|Shortcut=
-|SeeAlso=[[FEM_tutorial|FEM tutorial]]
 }}
@@ Line 24: / Line 23: @@
 <!--T:2-->
-Creates an initial flow velocity constraint for a fluid flow analysis.
+Creates an initial flow velocity condition for a fluid flow analysis.
+==Usage== <!--T:10-->
+<!--T:9-->
+# Press the {{Button|[[Image:FEM_ConstraintInitialFlowVelocity.svg|16px]] [[FEM_ConstraintInitialFlowVelocity|Initial flow velocity condition]]}} button or select the menu {{MenuCommand|Model → Fluid boundary conditions → [[Image:FEM_ConstraintInitialFlowVelocity.svg|16px]] Initial flow velocity condition}}.
+# Enter an initial flow velocity value for the analysis. The value is entered as a combination of the 3 main cartesian vectors components (X,Y,Z).
+# For a 3D analysis, select a 'solid' (body) from your model, for a 2D analysis select a face. However, it is also possible to select a face (e.g. the inlet of a pipe) in 3D or an edge in 2D.
+==Formulas== <!--T:15-->
-==Usage== <!--T:9-->
+<!--T:16-->
+For a description how to input formulas, see section ''Formulas'' in the page for the [[FEM_ConstraintFlowVelocity#Formulas|Flow velocity constraint]].
-#Click on  [[Image:Fem-constraint-initial-flow-velocity.svg|32x32px]]
- or choose ""Model"" → '''Fluid Constraints'''  →  {{KEY|[[Image:Fem-constraint-initial-flow-velocity.svg|32x32px]] Constraint initial flow velocity}} from the top menu.
-#Enter an initial flow velocity value for the analysis. The value is entered as a combination of the 3 main cartesian vectors components (X,Y,Z).
-==Limitations== <!--T:9-->
+==Notes== <!--T:13-->
-*The constraint applies the initial flow velocity to all nodes in the FEA model.
-*The constraint cannot be oriented other then using the main cartesian components.
-==Notes== <!--T:10-->
+<!--T:14-->
-In the most simple analyses, it is not necessary to specify the initial flow velocity, however it is recommended as best practice.
+In simple analyses, it is not necessary to specify the initial flow velocity, however it is recommended as best practice.
-<!--T:3-->
-<br />
 <!--T:5-->
 {{Docnav
-|[[FEM_ConstraintElectrostaticPotential|Constraint electrostatic potential]]
+|[[FEM_ConstraintMagnetization|Constraint magnetization]]
-|[[FEM_ConstraintFluidBoundary|Constraint fluid boundary]]
+|[[FEM_ConstraintInitialPressure|Constraint initial pressure]]
+|[[FEM_Workbench|FEM]]
-|[[FEM_Module|FEM]]|IconL=Fem-constraint-electrostatic-potential.svg
+|IconL=FEM_ConstraintMagnetization.svg
+|IconR=FEM_ConstraintInitialPressure.svg
 |IconC=Workbench_FEM.svg
-|IconR=FEM_ConstraintFluidBoundary.png
 }}
@@ Line 53: / Line 56: @@
 {{FEM Tools navi{{#translation:}}}}
 {{Userdocnavi{{#translation:}}}}
-{{clear}}