[Nek5000-users] surface integral as function of z

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

Kamal,

If your elements are aligned in the z direction (e.g., as would be the case if the
mesh is generated via n2to3 or genbox), then you can use one of the planar
averaging routines, which would produce E(z) as a result.  If you planar average
zm1, you'll also get Z(z) as a result and you can plot E vs Z

Paul

________________________________________
From: nek5000-users-bounces at lists.mcs.anl.gov [nek5000-users-bounces at lists.mcs.anl.gov] on behalf of nek5000-users at lists.mcs.anl.gov [nek5000-users at lists.mcs.anl.gov]
Sent: Friday, December 19, 2014 7:34 AM
To: nek5000-users at lists.mcs.anl.gov
Subject: [Nek5000-users] surface integral as function of z

Dear Nek's

I am planning to calculate the surface integral at a given ' z '
position .  ( z is my flow direction)

I know there is a sub routine surface_int(U,A,v,e,f)  to calculate the
surface integral, where the elements are identified using the boundary
condition.

What should I do calculate the surface integral as function of z position.


                /
i.e   E=   |  omega^2   dx dy
               /
              s


I tried to dump the data using the  function interp_v(uvw,xyz,n) at a
particular cross section but it is not helping much, since I need
thousands of cross section data to have  E as a function of z .


Thanks in advance

Best Regards,
Kamal
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