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[TurboGrid] Help defining Flow Path with external CAD

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Old   January 13, 2014, 08:59
Default Help defining Flow Path with external CAD
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Oliver Westbrook-Netheton
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I'm not sure if what I am trying to do 'works' with TurboGrid.

I have a CAD model (SolidWorks - part, not an assembly) of a simplified helicopter rotor head embedded in a wind tunnel section (

I am trying to use TurboGrid to generate a mesh for the rotor blades so ANSYS can analyse the rotors as they enter vortex ring state (an aerodynamic effect in helicopters).

However, I am having difficulties defining the Flow Path within the geometry section of ANSYS where I have imported the CAD model. When I try to define an Inlet/Hub/Shroud Contour I cannot select a surface.

From research it appears these contours are defined by sketch edges (, so it would appear my problem is arising as detail from the CAD model is lost during the import to ANSYS.

Could anyone suggest a way to either:

Import a CAD model to ANSYS whilst keeping all (or a lot of) its detail.

Select contours from an imported CAD model (I have tried using the "Lines from Edges" concept tool etc).

Or have I adopted the wrong approach altogether for what I am trying to achieve?
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cad model, flow path, turbogrid

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