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PODSolver : Proper Orthogonal Decomposition

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Old   November 9, 2017, 11:18
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Giovanni Stabile
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Dear All,

For the people interested we have finally released the first version of the library.

It works with the last version of the OpenFOAM (5.0).

At the following github link you can download it:

https://github.com/mathLab/ITHACA-FV

I'm still working on it trying to improve the documentation especially for what concern the tutorials and trying to remove eventual bugs.

ITHACA-FV is at an early development stage, so contributions improving either the code or the documentation are welcome, both as patches or merge requests on the github website.

Cheers,

Giovanni
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Old   February 27, 2018, 13:51
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Martin
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Dear Giovani,

I just found out about existence of this topic and that we work on (almost) the same thing. Basic idea behind our approach is given in

https://www.researchgate.net/publica...W_COMPUTATIONS

Do you plan to attend the 13th OpenFOAM workshop in Shanghai? I would be glad for an opportunity to discuss the topic.

Besh wishes,
Martin
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Old   October 5, 2018, 13:26
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Syavash Asgari
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Quote:
Originally Posted by giovastabile View Post
Dear All,

For the people interested we have finally released the first version of the library.

It works with the last version of the OpenFOAM (5.0).

At the following github link you can download it:

https://github.com/mathLab/ITHACA-FV

I'm still working on it trying to improve the documentation especially for what concern the tutorials and trying to remove eventual bugs.

ITHACA-FV is at an early development stage, so contributions improving either the code or the documentation are welcome, both as patches or merge requests on the github website.

Cheers,

Giovanni

Dear Giovanni,


Thank you for sharing this great utility. I downloaded ITHACA and tried to install it on OpenFOAM 2.3.1. Unfortunately it didn't go well and I received couple of errors which I suppose the reason is the major changes of libraries in OpenFOAM-5.0 with respect to version 2.3.1.


I wanted to ask for a guide. Is there a version of ITHACA which supports OF 2.3 or 2.4? I will appreciate your help with this because I cannot use OF 5.0 at office due to some restrictions.


Kind Regards,
Syavash


P.S. What is the use of .C files inside the tutorials directories? The tutorial cases can be run without the .C files included inside (on OF-5.0 installed on my laptop)

Last edited by syavash; October 6, 2018 at 05:56.
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Old   January 9, 2019, 08:04
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Ashish Magar
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Thanks for sharing your work.

The very first tutorial of your repo, 01POD, when I ran perform_pod, gave unrealistic results which cannot be compared with the OF results. I tried again with the allrun script, but same results.

Can you please look into this? Might be I have some wrong understanding of the problem.

I am using OFv5.

Thanks.
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Old   January 9, 2019, 11:40
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Giovanni Stabile
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Dear ashishmagar600,

I don't understand your question. perform_pod is not running a reduced order model simulation it is only computing the POD modes. What do you mean by unrealistic results which cannot be compared with the OF results? Of course the modes does not look like the full order snapshots.

Giovanni
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Old   January 17, 2019, 05:47
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Ashish Magar
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I am trying to perform a POD, and reconstruct the solution at further time steps.

For initial studies, I am trying to get a solution for available time snapshots, so that I could compare those two data.

So what further steps are needed for getting a comparable solution.

Sorry, for I am a beginner here.

Thanks.
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