[Nek5000-users] Meshing complex geometries

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

Dear Neks,

I have been using Nek5000 previously to compute global stability of  
flows in relatively simple, plane 2D geometries.

Now I am considering the possibility to use Nek5000 for a rather  
complicated 2D axisymmetric geometry.
The flow is an axisymmetric jet with small co-flow outside. What is  
complicated is that I want to include the nozzle prior to the actual  
jet outlet. The nozzle should be converging, and contain an inner flow  
stream (jet flow) and an outer flow stream (co-flow), separated by a  
solid wall. We have an experiment in a similar geometry.

I thought that a good way to find out whether this works in Nek5000 or  
not is to try it.
So, my question is very basic:
What would be a good way to to proceed, when meshing a complicated  
axisymmetric geometry like this?

Many thanks!
Outi Tammisola