FEM ConstraintInitialFlowVelocity: Difference between revisions

From FreeCAD Documentation
(Marked this version for translation)
No edit summary
Line 35: Line 35:


<!--T:16-->
<!--T:16-->
For a description how to input formulas, see section [[FEM_ConstraintFlowVelocity#Formulas|Formulas]] in the page for the [[FEM_ConstraintFlowVelocity#Formulas|Flow velocity constraint]].
For a description how to input formulas, see section [[FEM_ConstraintFlowVelocity#Formulas|Formulas]].


==Notes== <!--T:13-->
==Notes== <!--T:13-->

Revision as of 15:58, 25 March 2023

FEM ConstraintInitialFlowVelocity

Menu location
Model → Fluid Constraints → Constraint initial flow velocity
Workbenches
FEM
Default shortcut
None
Introduced in version
-
See also
FEM Constraint flow velocity, FEM Constraint initial pressure

Description

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

Usage

  1. Either press the toolbar button FEM ConstraintInitialFlowVelocity or select the menu Model → Fluid Constraints → Constraint initial flow velocity.
  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.

Notes

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