If you are working with vtu files. You can load data file into paraview and add new variables. 

you can even do magu = u+v at every point and save it as new vtu file.

check out the calculator symbol button in paraview.

Ashok

On Monday, November 14, 2016, Serson, Douglas <d.serson14@imperial.ac.uk> wrote:

Hi,


I am not sure if what is in the user-guide would work, since it seems to only handle functions (e.g. for initial conditions).


Although this is not very elegant, changing the variable names directly inside the fld files works for me.

For example, for the output of a serial simulation you could run in the command-line

    sed -i -e 's/"u,v,p"/"MomentumX,MomentumY,p"/g' solution.fld

and for a parallel simulation

    sed -i -e 's/"u,v,p"/"MomentumX,MomentumY,p"/g' solution.fld/*.fld

where solution.fld is the file you want to modify.


Cheers,

Douglas

    

From: nektar-users-bounces@imperial.ac.uk <nektar-users-bounces@imperial.ac.uk> on behalf of Sherwin, Spencer J <s.sherwin@imperial.ac.uk>
Sent: 14 November 2016 22:20:43
To: Selbach, Fabian
Cc: nektar-users
Subject: Re: [Nektar-users] hwo to change the name of variables in the output *.vtu file
 
Hi Fabian,

That sounds a possibility. I have to confess I did not know about that option!

Cheers,
Spencer.

On 14 Nov 2016, at 22:05, Selbach, Fabian <fabian.selbach@student.uni-siegen.de> wrote:

Hello,
maybe the section "remapping variable names" in the user-guide can help you to solve your problem.
Best regards
Fabian
Von: nektar-users-bounces@imperial.ac.uk [nektar-users-bounces@imperial.ac.uk]" im Auftrag von "ztdepyahoo@163.com [ztdepyahoo@163.com]
Gesendet: Sonntag, 13. November 2016 07:30
An: nektar-users
Betreff: [Nektar-users] hwo to change the name of variables in the output *.vtu file

Dear professor:
     In the vtu file, the u and v velocity must have name MomentumX and MomentumY, How to resolve this.
Regards.

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Spencer  Sherwin
McLaren Racing/Royal Academy of Engineering Research Chair, 
Professor of Computational Fluid Mechanics,
Department of Aeronautics,
Imperial College London
South Kensington Campus
London SW7 2AZ

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