POD

magnus · January 25, 2007, 07:51

Hi,

I am interested in doing POD of my snapshots from my scalar/vector field results. Did anyone here implement an algorithm for this already that you want to share?? I have one already in fortran that is not compatible with OpenFOAM format so it would take some effort to rewrite it.

I think such a tool would be valuable in the OpenFOAM postproc toolkit

thanks
/M

hjasak · January 25, 2007, 08:13

Have a look at my presentation at the US Navy Research labs:

http://www.foamcfd.org/resources/200..._13Nov2006.pdf

As you can see, the POD tools in OpenFOAM are working already: I am currently using POD-based data analysis on LES results (but there are several other things to be done with it as well). However, this is as yet unpublished work and a basis of some further developments close to my heart. My practice is not to release the code untli the poeple who did the work complete their publications and similar - this a very important part of the work.

If you have interest in a joint research project or similar please feel free to contact me.

Hrv

magnus · January 26, 2007, 10:26

Hi,

Thanks for your answer! I need to get the POD results as fast as I can, so I guess I will have to make an ugly solution of mapping the formats between the two codes (at least for now).

Regarding your presentation, I found your slide on aeroacoustics interesting (slide nr 9). Parts of my research is about evaluating acoustic fields, although I use an acoustic analogy (solving the wave equation). Would you care to expand on the method in your presentation a bit? I guess this tool is also not distributed right?

best regards!
/M

maka · March 13, 2008, 19:25

I wonder if the POD library is availble at the moment. Thanks.

Best regards,
Maka.

maka · April 18, 2008, 09:10

I'm thinking to use POD as a way to compress the transient data. Any experience of how efficient is it in doing such job for wall bounded flows with separation. Thanks.

Best regards,
Maka.

January 25, 2007, 07:51	Hi, I am interested in doin	#1
magnus New Member Magnus Åberg Join Date: Mar 2009 Posts: 11 Rep Power: 17	Hi, I am interested in doing POD of my snapshots from my scalar/vector field results. Did anyone here implement an algorithm for this already that you want to share?? I have one already in fortran that is not compatible with OpenFOAM format so it would take some effort to rewrite it. I think such a tool would be valuable in the OpenFOAM postproc toolkit thanks /M

January 25, 2007, 08:13	Have a look at my presentation	#2
hjasak Senior Member Hrvoje Jasak Join Date: Mar 2009 Location: London, England Posts: 1,905 Rep Power: 33	Have a look at my presentation at the US Navy Research labs: http://www.foamcfd.org/resources/200..._13Nov2006.pdf As you can see, the POD tools in OpenFOAM are working already: I am currently using POD-based data analysis on LES results (but there are several other things to be done with it as well). However, this is as yet unpublished work and a basis of some further developments close to my heart. My practice is not to release the code untli the poeple who did the work complete their publications and similar - this a very important part of the work. If you have interest in a joint research project or similar please feel free to contact me. Hrv __________________ Hrvoje Jasak Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk

January 26, 2007, 10:26	Hi, Thanks for your answer!	#3
magnus New Member Magnus Åberg Join Date: Mar 2009 Posts: 11 Rep Power: 17	Hi, Thanks for your answer! I need to get the POD results as fast as I can, so I guess I will have to make an ugly solution of mapping the formats between the two codes (at least for now). Regarding your presentation, I found your slide on aeroacoustics interesting (slide nr 9). Parts of my research is about evaluating acoustic fields, although I use an acoustic analogy (solving the wave equation). Would you care to expand on the method in your presentation a bit? I guess this tool is also not distributed right? best regards! /M

March 13, 2008, 19:25	I wonder if the POD library is	#4
maka Senior Member Maka Mohu Join Date: Mar 2009 Posts: 305 Rep Power: 18	I wonder if the POD library is availble at the moment. Thanks. Best regards, Maka.

April 18, 2008, 09:10	I'm thinking to use POD as a w	#5
maka Senior Member Maka Mohu Join Date: Mar 2009 Posts: 305 Rep Power: 18	I'm thinking to use POD as a way to compress the transient data. Any experience of how efficient is it in doing such job for wall bounded flows with separation. Thanks. Best regards, Maka.