Generate fluted pipe geometry in ANSYS

[arehman1289]

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

 

[CWatters]

You cross section has a sharp step in it. That looks wrong to me.

 

[Nidum]

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 .

 

[CWatters]

Try a cross section similar to the valve cam on a car?