[Nek5000-users] Calculating forces on sphere

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

Check how we do it in the trubChannel example (see set_obj).

Stefan

 
On May 3, 2010, at 10:08 AM, nek5000-users at lists.mcs.anl.gov wrote:

> Dear Neks,
> 
> for my case 'periodic channel flow around a sphere' I wanted to calculate the forces acting on the sphere. I've seen that there exists a 'drag_calc' subroutine in navier5.f.  But as I understood I have to define my sphere as an object, that this works. Is this right?? Because until now the surface of the sphere is defined as 'wall'.
> 
> And if I have to define it as an object, I wanted to ask if there is an easy and fast doing this? Is there maybe a way doing this similar to defining the boundary conditions with 'set entire level', or do I have to add all the faces of the sphere by hand in prenek??
> 
> Thanks a lot for you time.
> 
> Best, Fred
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