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Parametric Volute - Loss of tangency at the outlet duct/scroll interface


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#1 Mr. Simone Bigalli

Mr. Simone Bigalli

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Posted 06 September 2019 - 04:47 PM

Hi,

 

I’m currently working on the creation of a parametric volute with an overhung section. 

 

I have almost completed my model. However, after having exported my geometry to an external CAD in step format, I noticed that a loss of tangency occurs at the interface between the outlet duct and the scroll, in correspondence of the largest section.

For the creation of the outlet duct, I followed the tutorial available in CAESES: I used the fillet surface (with both tangent factors equal to 1 and edge sampling strategy with 50 nodes) to smoothly connect the outlet section with the scroll, after having defined two auxiliary surfaces.

 

Is there any correction I can apply to overcome this problem?

 

Thank you very much.

 

Cheers.

Simone


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#2 Mr. Carsten Fuetterer

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Posted 09 September 2019 - 07:53 AM

Hi Simone,

 

yes you are right and we recently fixed this issue. Find attached the updated feature for the diffuser. We also update the tongue feature.

 

best regards

Carsten

 

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Carsten Fütterer
M.Sc. Energy & Process Engineering
CAE Applications Engineer
www.friendship-systems.com
Tel. +49 (0)331 967 66 28

 


#3 Mr. Simone Bigalli

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Posted 10 September 2019 - 12:57 PM

Hi Carsten,

 

Thank you very much for your reply. I will try to implement these features in my model and let you know if everything worked properly.

 

Cheers.

 

Simone


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