[Nek5000-users] Creating a Mesh

[nek5000-users at lists.mcs.anl.gov]

Hi

Can some one please help me in this because I am new to nek

1) How can I create a .rea for a specific geometry say ' A sudden 
expansion pipe ' or a ' Diverging pipe '

2) What tool I should use to create that mesh.


Thank you


kamal