[Gmsh] Problem making a bulged cylinder using Gmsh

[Rahul]

Hello friends,

I am having problem making a simple geometry in Gmsh. I am trying to 
make a cylinder with a bulge. The bulged part of the cylinder is based 
on a 2D equation. The cylinder part is Ok but i am not able to draw the 
bulged part of the cylinder in Gmsh. I tried to import the Iges file 
from solidworks and save it as .geo file but the saved .geo has a lot of 
splines in it. I was thinking is there a simpler way to draw this 
geometry directly into Gmsh. I have attached IGS file for the same geometry.

Thanks a lot for any help!
Rahul
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