[Nek5000-users] Using Cartesian grid lookup table in Nekton

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

Let's consider 

ffx = f(x,y,z)

here f is an user function (something you have to provide) which get evaluated at x,y,z (your grid points). Interpolation is required if f is given by a discrete data set. 

hth


-----Original message-----
> From:nek5000-users at lists.mcs.anl.gov <nek5000-users at lists.mcs.anl.gov>
> Sent: Wednesday 30th May 2018 19:19
> To: nek5000-users <nek5000-users at lists.mcs.anl.gov>
> Subject: Re: [Nek5000-users] Using Cartesian grid lookup table in Nekton
> 
> Hi,
> 
> Thanks for the reply. The look up table is in a finite difference grid. Are you saying I can still feed it to the .usr file and it should be fine?
> 
> Thanks,
> Saikat
> <br clear="all" />Saikat Mukherjee,
> PhD Student,
> Paul Research Group - http://www.me.vt.edu/mpaul/ <http://www.me.vt.edu/mpaul/>
> Engineering Science and Mechanics,
> Virginia Tech.
> 
> On Sat, May 26, 2018 at 10:54 PM,  <nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>> wrote:
> Hi Saikat,
> 
> You can always do the reading from the look up table from .usr file, at once then feed the data to your ffx ffy and ffz through a common block.
> 
> On Thu, May 24, 2018 at 10:55 PM,  <nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>> wrote:
> Hey all,
> 
> Just following up on the query. Would appreciate any input.
> 
> Thanks,
> Saikat
> <br clear="all" />Saikat Mukherjee,
> PhD Student,
> Paul Research Group - http://www.me.vt.edu/mpaul/ <http://www.me.vt.edu/mpaul/>
> Engineering Science and Mechanics,
> Virginia Tech.
> 
> On Tue, May 22, 2018 at 4:47 PM, Saikat Mukherjee <msaikat6 at vt.edu <mailto:msaikat6 at vt.edu>> wrote:
> Hey Neks,
> 
> I have a forcing function which is in the form of a look up table in X-Y cartesian grid. I would like to use this forcing function in the 2-D fluid momentum equation that Nekton solves. Is there a way to do this in the .usr file or elsewhere?
> 
> Thanks,
> Saikat
> 
> 
> <br clear="all" />Saikat Mukherjee,
> PhD Student,
> Paul Research Group - http://www.me.vt.edu/mpaul/ <http://www.me.vt.edu/mpaul/>
> Engineering Science and Mechanics,
> Virginia Tech.
> 
> 
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