CFturbo - Turbomachinery Design Software: Radial, Mixed-flow Pump and Ventilator Impellers and Volutes

Volute: design steps

1. Inflow definition

Input of design point and der data of impeller outlet
Calculation/specification of volute inlet
Information regarding inlet diameter and width ratio

2.1 Volute geometry

Specification of wrap angle and start angle
Calculation of volute geometry by design rule of PFLEIDERER (const. swirl) or STEPANOFF (const. velocity)
Specification of cut-water thickness or rounding from spirale to diffusor

2.2 Cross sections

Possible cross section shapes: Rectangle, Trapezoid, symmetric/asymmetric circle, free-form (Bezier)
Information regarding end cross section: height, width, side ratio, equivalent diameter, area, average velocity

2.3 Free-form (Bezier) cross section

Free form cross section shape by Bezier splines
Rectangle/ Trapezoid type
relative/ absolute coupling of cross sections

2.4 Diffusor

Tangential or radial direction
Round or rectangular end cross section
Information regarding cone angle and deceleration ratio

3. 3D-view, Export

3D view as solid or wire frame
Rotate, translate, zoom, color configuration possible
Data export of geometry data to several CAE formats: IGES, DXF, Unigraphics, PRO/Engineer Wildfire, SolidWorks, Catia V5, Autodesk Inventor, AutoCAD, One Space Designer, ANSYS ICEM-CFD, Gridgen, IGG (Numeca), text file
Other interfaces to CAD systems, mesh generators, CFD- or FEM packages optional available on request.

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