BladeModeler 4.0 BladeGen

Introduction BladeModeler CAD CAD UserIO BladeGen DesignModeler BladeEditor UserIO CAD TurboGrid Simulation CFX-Mesh ICEM CFD

Introduction Stationary or Rotating Components Centrifugal Compressors, Pumps or Blowers Radial Turbines - Turbochargers, Francis, Expanders Axial Fans, Inducers, Compressors or Turbines Diffusers, Deswirl Cascades, Guide Vanes … Ruled Element or Sculpted Blades Linear or Non-Linear Leading and Trailing Edges User Specified Leading and Trailing Edge Shapes Shrouded or Unshrouded Designs Trim Tool for Splitter Blades

BladeGen in Workbench BladeGen is launched from the Workbench Start Page

BladeGen in Workbench BladeGen can also be launched from the Project Page Double-clicking on a BGD or BGI file in Windows Explorer will also launch BladeGen in Workbench

BladeGen Axial Radial Impeller Simple Axial Radial Deswirl Vane Radial Diffuser Radial Turbine

BladeGen Initial Blade Setup Can define wrap angle, thickness, and number of blades

BladeGen Initial Blade Setup Alternatively, blade can be defined by defining pressure and suction sides

BladeGen: Design Environment Meridional View Auxilliary View Angle View Thickness View

BladeGen PS/SS Angle/Thickness

BladeGen: Meridional View Meridional Profile of blade is created in meridional view Curves can be defined as: Piecewise Linear Cubic Spline Bezier Best Fit Polynomial Arc Segment

BladeGen Linear or non-linear leading and trailing edges can be created

BladeGen Blade shape is defined in a number of layers from hub to shroud

BladeGen User can specify blade on each layer in Angle view by: Curve defining beta Curve defining theta End Angle End Angle with Beta Slope = 0

Blade Angle Definition BladeGen Blade Angle defines camber line shape Can define blade angle by: Wrap Angle Distribution (m-theta) Flow Angle Distribution (m-beta) Blade Angle Definition

BladeGen Can generate Ruled Element or Sculpted Blades

BladeGen: Flank Milled Blade Support When exporting the geometry, output the meridional defining points for the hub and shroud contour splines instead of the normal point distribution Can be used to control the surface ruling LE/TE shape still added Use care to make sure the contour points do not overlap the ellipse points

BladeGen: Thickness By default, thickness is uniform from hub to shroud Thickness can be defined on individual layers Thickness can be defined as follows: Normal to Meanline on Layer Surface (default) Normal to Camber Surface Tangential on Layer Surface

BladeGen Thickness Distribution Options

BladeGen: Second Thickness Curve If defining normal to meanline on layer thickness, “Show Second Thickness Curve” option displays normal to camber thickness If defining normal to camber thickness, this option displays normal to meanline on layer thickness

BladeGen Splitter Blades can be added

Blade Output Blade Extension Allows the user to specify additional curves in the Meridional View to control the extension of the blade (usually for manufacturing). Over/Under Filing Specified by location, length, and depth.

Auxiliary View Addition Multiple Auxiliary Views OpenGL View Enhancements Included in Auxiliary View. Printing and Clipboard available. Contours on Meridional Profile Theta, Beta, or Thickness Plots of Theta, Beta, and Thickness vs. Z and R Additional Graph Types

Report Generation Creation of a Rich Text Format (rtf) file User Specified content. Almost any view, plot, or table imaginable. Uses ‘BGI’ file format and editor. Accessed through File | Export menu.

Additional Geometry Tools Rotation of Vanes in Meridional Passages Rotation of Blade about an Axis. Currently limited to Radial Passages Only. Addition Geometry Modification/Corrections Reverse Flow Direction Reverse Theta Direction Swap Hub and Shroud Curves

IGES data import through import wizard AutoCAD IGES CFX-BladeGen Pro/ENGINEER

Data Export to TurboGrid TurboGrid Export icon on BladeGen toolbar Exported TurboGrid INF file is registered on the Project Page INF file contains geometry units, leading and trailing edge types and *.curve filenames

Data Export to CAD Import .bgd file into DesignModeler Details covered in next lecture

BladeGen: Miscellany New Features in BladeGen 11.0: Improved over/under-filed blades Supports longer filing lengths Removed extrapolation of meanline to prevent pressure/suction curves from crossing; the result is that an over-filed, cut-off blade may be shorter than the original Cut-off blades imported by BladeEditor should be unaffected by the extrapolation change Improved TurboGrid export Additional information about the blade (surface lofting) sent to TG through the .inf file Proper .curve point markers for cut-off and square edged blades

BladeGen Final note before saving: Prior to saving model, it is important to specify the model properties, esp. Model Units under Tools > Properties

BladeGen Some hands on practical demonstrations to try Practical #2