Translations:FEM ConstraintInitialFlowVelocity/9/en

From FreeCAD Documentation
  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.