Specification of flow rate, pressure difference, number of revolutions, density of fluid and pre-swirl
Calculation of initial values for characteristic quantities: diameter coefficient, hydraulic efficiency, volumetric efficiency, pressure coefficient, number of blades, meridional deceleration, flow angles etc.
Calculation of main dimensions of the impeller: hub, suction diameter and impeller diameter, inlet and outlet width
2. Definition of meridional contour
Interactive definition of hub and shroud by straight lines+arcs or Bezier splines or user-defined polylines
Positioning and design of leading edge
Display of value and position of maximum curvature, static moment, progression of cross section area (circles)
3. Blade properties
Definition of basic blade shape: Simple 2D (prismatic or circular) or 3D free form
Calculation of blade angles on leading and trailing edge
Consideration of contraction of flow channel by blades
Estimation of decreased output by PFLEIDERER's or WIESNER's theory
Display of velocity triangles
Display of velocity components and flow angles
5. Blade mean lines
Calculation of circular blades or interactive definition of mean lines using Bezier splines or user-defined polylines
Display of blade angle (Beta) progression
Display in frontal view
6. Blade profiles
Specification of blade thickness on the mean lines
Display in frontal view
7. Leading edges
Simple leading edges or rounding leading edges by Bezier splines
Display in frontal view
8. 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, AutoCAD, Autodesk Inventor, One Space Designer, ANSYS ICEM-CFD, ANSYS BladeGen, ANSYS TurboGrid, AutoGrid (Numeca), Gridgen, Gambit (Fluent), text file
Other interfaces to CAD systems, mesh generators, CFD- or FEM packages optional available on request.
![[maindim]](../images_imp/maindim_v.gif)
![[meridian]](../images_imp/meridian_v.gif)
![[blprop]](../images_imp/blprop_v.gif)
![[ml]](../images_imp/ml_v.gif)
![[prof]](../images_imp/prof_v.gif)
![[le]](../images_imp/le_v.gif)
![[3d]](../images_imp/3d_v.jpg)