[Nek5000-users] Interpolation on a finer mesh

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

Note:

* this feature is only available in the latest MASTER on GitHub
* only single .fXXXX fld files are supported
* selective restarts (using only a subset of the fld file) is currently not supported

Stefan
 
-----Original message-----
> From:Stefan Kerkemeier <stefanke at k2.intranet>
> Sent: Tuesday 20th June 2017 15:39
> To: nek5000-users at lists.mcs.anl.gov
> Subject: RE: [Nek5000-users] Interpolation on a finer mesh
> 
> You can use our generic fld reader.
> 
> Just add this to userchk(): 
> 
> if(istep.eq.0) call gfldr('myfldfilename')
> 
> This will interpolate your field file data to your new mesh. You're all set :)
> 
> Cheers,
> Stefan
>  
> -----Original message-----
> > From:nek5000-users at lists.mcs.anl.gov <nek5000-users at lists.mcs.anl.gov>
> > Sent: Tuesday 20th June 2017 15:19
> > To: nek5000-users at lists.mcs.anl.gov
> > Subject: [Nek5000-users] Interpolation on a finer mesh
> > 
> > Dear Neks,
> > 
> > I am simulating turbulent pipe flow with Nek5000. As a first step, I 
> > have generated a fully developed turbulent pipe flow within a domain of 
> > L_z = 5 D at Re_\tau = 360. Now, I would like to use this flow field as 
> > an initial / restart condition for a turbulent flow at a Re_\tau=720 
> > with a finer mesh.
> > The geometry of the finer mesh is contained in a .rea file.
> > 
> > 
> > For doing the interpolation, I have found the "interpolation wrapper for 
> > usage in .usr file" in core/intp_usr.f.
> > Can someone give a short example on how to use these subroutines to 
> > interpolate results from 3 or 4 restart files onto my new geometry?
> > 
> > 
> > Kind Regards,
> > Steffen Straub
> > 
> > 
> > -- 
> > Karlsruhe Institute of Technology (KIT)
> > Institute of Fluid Mechanics
> > 
> > M.Sc. Steffen Straub
> > Doctoral Researcher
> > 
> > Kaiserstraße 10
> > Building 10.23
> > 76131 Karlsruhe, Germany
> > 
> > Phone: +49 721 608-43027
> > E-mail: steffen.straub at kit.edu
> > Web: http://www.istm.kit.edu
> > 
> > KIT – The Research University in the Helmholtz Association
> > 
> > Since 2010, the KIT has been certified as a family-friendly university.
> > 
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