Generate fluted pipe geometry in ANSYS

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To create a spirally fluted pipe in ANSYS, the cross section should be adjusted to eliminate sharp steps, as they can lead to incorrect geometry. A recommended approach is to design a cross section that includes one half trough, one full lobe, and another half trough, then rotate and translate this shape. Merging the join line and trimming the ends flat will help achieve the desired result. Additionally, users can explore forums or blogs dedicated to ANSYS for further assistance. Proper cross section design is crucial for accurate geometry generation in ANSYS.
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I am trying to make a spirally fluted pipe in ANSYS. I made the cross section as in the attached figure and sweeped on a straight line perpendicular to plane of the cross section. However I get a sort of a drill bit instead of the required spirally fluted pipe. Is there an issue with the cross section or the way I sweep ? Also is there in blog/forum for help on ANSYS issues. Thank you very much in advance
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You cross section has a sharp step in it. That looks wrong to me.
 
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That shape can be generated in several ways but one way is to draw a cross section of one half trough + one full lobe + one half trough and then rotate and translate .

Merge the join line and trim the ends flat to complete .
 
Try a cross section similar to the valve cam on a car?
 

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