Butterfly Mesh Generation
So I have had some reasonable results using a hemispherical domain to look at the flow around a slender axisymmetric body at high angles of attack. However, the singularity at the nosetip created by the process of sweeping a 2D face mesh introduces an error into the results close to the tip.
To avoid this, I would like to use a structured butterfly mesh. I see that CFD-GEOM has an option to create butterfly faces but I do not have access to it. Can anyone recommend any alternative software which has this option?
If not, can anyone recommend a meshing strategy using something like gMsh? I have an idea where to start (create the tip geometry using a revolve tool and then create some circular arcs which are coincident with the surface but the latter I haven't quite figured out how to do yet) but some guidance would be appreciated.
So all this time and still no help? Hah! Seriously, can anyone point me to any open source software in which I can do this?
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