3D mesh generation failed. Could not create fillet geometry. No blend surfaces created.

Hi Hans,

I will need more information, on how you are trying to define the fillet geometry at hub and shroud. 
Importing the .geomTurbo file will create a blade geometry, after that you need to define the fillet by selecting the surfaces from CAD file and linking it to the hub. (If you are trying to link a user defined Hub fillet with a .geomTurbo file). After linking fillet to the hub, you need to adapt and control settings of hub fillet by going into properties menu in Hub fillet and set the parameters to generate flow paths.

I recommend you to go through the tutorial 11 in the advanced section in Autogrid5 manual. In the last section of tutorial, a user defined fillet is created from CAD geometry, in the same way you are trying to get a mesh with a fillet.

Please let me know if you have any further questions.

Manthan 

Hi Manthan,

thank you for your reply.

I don't have a CAD file of the fillets. I create the fillets in AutoGrid.

I also tried to change the .geomTurbo to native. It didn't work.

Further information on my fillet creation (everything is in inches):

Thanks for providing more details.

The issue seems due to the geometry creation of the fillet and not in the mesh generation. i cannot comment on the size of the channel and where the fillet border is located, but it seems like a large fillet. In that case I think it would be more convenient to go with different geometry approach rather than B2B section offset. For instance, constant radius approach may work in this case. 

I generated the mesh on stator 2 of Aachen Turbine, and it worked successfully with B2B section offset approach as well. But, indeed dimensions of your case may differ and hence the geometry of fillet. 

I hope it helps and answers your query.

Manthan

Thank you Manthan for the effort you are putting in. I forgot to post the size.

I scaled the Aachen 2nd Stator to fit a Hub of 9.66 inch and shroud of 11,35 inch.

From leading to trailing edge axial chord it is about 1,35 inches.

The fillets are 0,1 inch.

For my specific case the constant radius approach will not work.

Regards,

Hans

Hi,

The fillet size you are using is big, and channel that you are using from the CAD geometry is not large enough. 
You need to carefully consider the size. Does the fillet fits in the channel or if it is touching the next blade in the passage, or the Rotor Stator interface. According to this, you need to adjust the fillet size or size of channel, to be able to get a fillet, with correct geometry.  

Manthan