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Use coarse grid flow solution as initial solution for fine grid

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Old   March 22, 2019, 05:10
Default Use coarse grid flow solution as initial solution for fine grid
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Nathan Ricks
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Hi SU2 Users,

I think the title is pretty self-explanatory, but I will expand for clarity.

I'm just wondering if it is possible to use a flow solution from a coarse grid, as the initial solution for running a finer resolution grid of the same geometry? So if there is some sort of built-in interpolation between two meshes?

I'm running a case where if the solution does not converge, I refine the mesh, and run again on the refined mesh - so it would be great if I could use the flow solution obtained from the coarse mesh (as long as it didn't diverged, just didn't converge in a set number of iterations) as a starting point for the fine grid.

If you know if this sort of thing is available, please let me know!

Thank you in advance,
Kind Regards,

Nathan
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Old   March 31, 2019, 18:59
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Pedro Gomes
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Hi Nathan,

Currently that functionality is not implemented, but someone is working on it for v7.

Cheers,
Pedro
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Old   April 2, 2019, 10:25
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Nathan Ricks
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Quote:
Originally Posted by pcg View Post
Hi Nathan,

Currently that functionality is not implemented, but someone is working on it for v7.

Cheers,
Pedro
Hi Pedro,

Thanks for the reply, that's great to hear it's coming!

Cheers,
Nathan
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Old   January 20, 2023, 13:34
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Giovanni Medici
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I know it is a relatively old post, anyway I was wondering whether the function
of interpolating a solution of a coarse mesh onto a refined one, is actually available in the latest SU2 versions (7.5.0).

I know that a lot of effort was carried out in the last years and releases, and that until say version 7.0.3 a feature_adap branch was carrying that option (it was actually providing a lot more, with mesh adaptation based on solution parameters).

To my understanding that branch didn't make it to merge to the master one, and is not updated.

Thanks!
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Old   January 20, 2023, 19:15
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pcg
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Pedro Gomes
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It is currently possible to restart from a solution on a coarser (or finer) mesh.
No options are required.
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Old   January 21, 2023, 04:41
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Giovanni Medici
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Oh, that's great, thanks for the answer Pedro!
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Old   January 25, 2023, 08:00
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Hyun Ko
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Quote:
Originally Posted by pcg View Post
It is currently possible to restart from a solution on a coarser (or finer) mesh.
No options are required.


Wow. That’s very good.
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