|Model → Fluid boundary conditions → Initial flow velocity condition|
|Introduced in version|
|Constraint flow velocity, Constraint initial pressure|
Creates an initial flow velocity condition for a fluid flow analysis.
- Press the Initial flow velocity condition. button or select the menu Model → Fluid boundary conditions →
- 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.
For a description how to input formulas, see section Formulas in the page for the Flow velocity constraint.
In simple analyses, it is not necessary to specify the initial flow velocity, however it is recommended as best practice.