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-   -   Hubless Propeller in AutoGrid (https://www.cfd-online.com/Forums/fidelity-cfd/179521-hubless-propeller-autogrid.html)

syamsiprop November 1, 2016 17:32
Hubless Propeller in AutoGrid
 
1 Attachment(s)
Hello,

I wanna ask something,
as i know, AutoGrid need 3 important definition : Shroud, Hub and Blade
i've project to analyze hubless propeller. its possible to analyzing in Fine Turbo with meshing in AutoGrid?

When i try to link Geometry, I cant link blade surface to blade. Hope all of you can help me :)

Thank you

Attached file : Capture imported Geometry in Import CAD Window
syamsi11@mhs.ne.its.ac.id

colinda1 November 7, 2016 02:30
The blade is physically connected to the shroud then? Sure it is possible to analyze in AutoGrid. You just need to define a virtual hub and add a block for the center part e.g. in a 3D effect.

syamsiprop November 18, 2016 08:27
Quote:
Originally Posted by colinda1 (Post 624447)
The blade is physically connected to the shroud then? Sure it is possible to analyze in AutoGrid. You just need to define a virtual hub and add a block for the center part e.g. in a 3D effect.
Hi collinda
Thanks for your response.
i still confuse about that virtual hub and block for the center. may you explain more specific to me?

colinda1 November 21, 2016 10:07
In your CAD or in the CAD import window of AutoGrid5 you may define a virtual hub. What I mean by virtual that you will mesh it as if it is a wall but then you can add a 3D effect in your AutoGrid5 project that inserts a (butterfly)block in the part from 0 radius up to the hub and that is connected with a full non-matching connection for example.
So the virtual hub is not a real wall but a connection to the inner fluid region.
Alternative to a 3D effect in AutoGrid5, the block can be added in IGG.


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