FEM ConstraintInitialFlowVelocity: Difference between revisions

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{{Docnav
{{Docnav
|[[FEM_ConstraintElectrostaticPotential|Constraint electrostatic potential]]
|[[FEM_ConstraintMagnetization|Constraint magnetization]]
|[[FEM_ConstraintFlowVelocity|Constraint flow velocity]]
|[[FEM_ConstraintInitialPressure|Constraint initial pressure]]
|[[FEM_Workbench|FEM]]
|[[FEM_Workbench|FEM]]
|IconL=FEM_ConstraintElectrostaticPotential.svg
|IconL=FEM_ConstraintMagnetization.svg
|IconR=FEM_ConstraintFlowVelocity.svg
|IconR=FEM_ConstraintInitialPressure.svg
|IconC=Workbench_FEM.svg
|IconC=Workbench_FEM.svg
}}
}}
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{{GuiCommand
{{GuiCommand
|Name=FEM ConstraintInitialFlowVelocity
|Name=FEM ConstraintInitialFlowVelocity
|MenuLocation=Model → Fluid ConstraintsConstraint initial flow velocity
|MenuLocation=Model → Fluid boundary conditionsInitial flow velocity condition
|Workbenches=[[FEM_Workbench|FEM]]
|Workbenches=[[FEM_Workbench|FEM]]
|SeeAlso=[[FEM_ConstraintFlowVelocity|FEM Constraint flow velocity]]
|SeeAlso=[[FEM_ConstraintFlowVelocity|Constraint flow velocity]], [[FEM_ConstraintInitialPressure|Constraint initial pressure]]
}}
}}


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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-->
==Usage== <!--T:10-->


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# 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}}.
# There are several ways to invoke the command:
# 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).
#* Press the {{Button|[[Image:FEM_ConstraintInitialFlowVelocity.svg|16px]] [[FEM_ConstraintInitialFlowVelocity|FEM ConstraintInitialFlowVelocity]]}} button.
# 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.
#* Select the {{MenuCommand|Model → Fluid Constraints → [[Image:FEM_ConstraintInitialFlowVelocity.svg|16px]] Constraint initial flow velocity}} option from the 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:11-->
==Formulas== <!--T:15-->


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For a description how to input formulas, see section ''Formulas'' in the page for the [[FEM_ConstraintFlowVelocity#Formulas|Flow velocity constraint]].
*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:13-->
==Notes== <!--T:13-->


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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.




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{{Docnav
{{Docnav
|[[FEM_ConstraintElectrostaticPotential|Constraint electrostatic potential]]
|[[FEM_ConstraintMagnetization|Constraint magnetization]]
|[[FEM_ConstraintFlowVelocity|Constraint flow velocity]]
|[[FEM_ConstraintInitialPressure|Constraint initial pressure]]
|[[FEM_Workbench|FEM]]
|[[FEM_Workbench|FEM]]
|IconL=FEM_ConstraintElectrostaticPotential.svg
|IconL=FEM_ConstraintMagnetization.svg
|IconR=FEM_ConstraintFlowVelocity.svg
|IconR=FEM_ConstraintInitialPressure.svg
|IconC=Workbench_FEM.svg
|IconC=Workbench_FEM.svg
}}
}}
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{{FEM Tools navi{{#translation:}}}}
{{Userdocnavi{{#translation:}}}}
{{Userdocnavi{{#translation:}}}}
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Latest revision as of 23:22, 13 November 2023

FEM ConstraintInitialFlowVelocity

Menu location
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

  1. Press the Initial flow velocity condition button or select the menu Model → Fluid boundary conditions → Initial flow velocity condition.
  2. 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).
  3. 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.