#78 Immersed boundary and rhoPimpleFoam: immersedBoundary::gradientInternalCoeffs() not implemented

[Daniel Cardoso]

Hi!

I've been attempting to use the immersed boundary wall condition for a compressible case using rhoPimpleFoam. However, I get an error message:
"""
--> FOAM FATAL ERROR:
Not implemented

From function immersedBoundary::gradientInternalCoeffs()
in file lnInclude/fvPatchField.H at line 473.

FOAM aborting
"""

I believe it is caused by using the immersed boundary wall in the Temperature field. It seems to be some problem in class inheritance between IB and thermal patch field...
I also happened to find a solution that didn't work for me in a Chinese forum that mentioned that Mr. Jasak was already informed about the problem - I don't speak any Mandarin though :(. https://zhuanlan.zhihu.com/p/389383026

Is there any solution for this problem? What could I do to workaround it?
Any information would be really helpful. Thank you for your time!

Thanks,

Daniel Cardoso

[Hrvoje Jasak]

Hi, The code fails in the thermo package because h boundary condition on the immersed boundary patch is set to a default patch field type (immersed boundary) that should not be used. There are options on how to fix this, ie either specify the h field or change the hBoundaryTypes to support immersed boundary.
This is broken in the entire OpenFOAM, for all coupled implicit or special boundary types which are not spefically listed in functions such as hBoundaryTypes or heBoundaryTypes. A good virtual function needs to be added and the entire hBoundaryTypes system decentralised.

This is a 2-week job (for me) and I cannot do it without a support contract or similar.

[Saj Xod]

Hi Dr. Jasak,

I have also encountered this issue while solving a dam-break problem using the immersed boundary method. I am aware that this error is related to the boundary condition of alpha. However, in the document you provided as an introduction to IBS, this problem was mentioned as one of the solved cases using this solver, specifically stating that it was solved with navalIBFoam.

Could you please clarify whether there is a workaround or if there have been any updates regarding this issue?

Best regards

[Hrvoje Jasak]

Fixed in nextRelease branch

On 26/02/2025 16:47, Saj Xod wrote:

Hi Dr. Jasak,

I have also encountered this issue while solving a dam-break problem
using the immersed boundary method. I am aware that this error is
related to the boundary condition of alpha. However, in the document you
provided as an introduction to IBS, this problem was mentioned as one of
the solved cases using this solver, specifically stating that it was
solved with navalIBFoam.

Could you please clarify whether there is a workaround or if there have
been any updates regarding this issue?

Best regards

---

[tickets:#78] https://sourceforge.net/p/foam-extend/tickets/78/
Immersed boundary and rhoPimpleFoam:
immersedBoundary::gradientInternalCoeffs() not implemented

Status: open
Milestone: 1.0
Created: Mon Aug 29, 2022 06:17 AM UTC by Daniel Cardoso
Last Updated: Mon Aug 29, 2022 10:22 AM UTC
Owner: Hrvoje Jasak
Attachments:

• ibangle2.tar.gz
  https://sourceforge.net/p/foam-extend/tickets/78/attachment/ibangle2.tar.gz (2.1 MB; application/x-gzip)

Hi!

I've been attempting to use the immersed boundary wall condition for a
compressible case using rhoPimpleFoam. However, I get an error message:
"""
--> FOAM FATAL ERROR:
Not implemented

|From function immersedBoundary::gradientInternalCoeffs() in file
lnInclude/fvPatchField.H at line 473. |

FOAM aborting
"""

I believe it is caused by using the immersed boundary wall in the
Temperature field. It seems to be some problem in class inheritance
between IB and thermal patch field...
I also happened to find a solution that didn't work for me in a Chinese
forum that mentioned that Mr. Jasak was already informed about the
problem - I don't speak any Mandarin though :(.
https://zhuanlan.zhihu.com/p/389383026
https://zhuanlan.zhihu.com/p/389383026

Is there any solution for this problem? What could I do to workaround it?
Any information would be really helpful. Thank you for your time!

Thanks,

Daniel Cardoso

---

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