Major design steps

1. Volute inlet

  • Definition of inlet width and inlet diameter of the volute
  • Positioning of volute relative to other components

2. Volute cross-section shapes

  • Rectangular, trapezoid or arc
  • Various free-form geometries
  • Asymmetric or symmetric
  • External and internal

3. Volute shape

  • Definition of start angle and wrap angle
  • Design by Pfleiderer, Stepanoff or own rules

4. Pipe diffuser modeling

  • Tangential or radial direction
  • Free-form modeling
  • Round or rectangular end cross section
  • Optionally bend in z-direction
  • Length of diffuser

5. Cutwater

  • Cut-water modeling
  • Simple mode (construction by Bezier spline)
  • Fillet mode

6. 3D-view

  • Dynamic 3D-representation (rotate, move, zoom)
  • Partial views
  • Export of CAD model