Port some Hermes-3 finite volume operators (rebased) by dschwoerer · Pull Request #3335 · boutproject/BOUT-dev

dschwoerer · 2026-03-20T19:12:16Z

Rebase of #3200 on top of #3320 and #3334

Includes bug fix: ```diff - BoutReal gL = n.c - n.L; - BoutReal gR = n.R - n.c; + BoutReal gL = n.c - n.m; + BoutReal gR = n.p - n.c; ```

Co-authored-by: Peter Hill <peter.hill@york.ac.uk>

github-actions

clang-tidy made some suggestions

ZedThree · 2026-06-18T16:44:26Z

A couple of points that haven't been done:

@mrhardman pointed out some other operators that could potentially be ported, along with their checks Port some Hermes-3 finite volume operators #3200 (comment)
there's now a lot of code in the fv_ops.hxx header -- if the set of possible CellEdges implementations is closed to what's in BOUT++, it would be possible to shift stuff out of the header and provide explicit instantiations of the template functions. This would probably speed up compilation, at the cost of being harder to add new limiters

…ove-ops

github-actions

clang-tidy made some suggestions

Co-authored-by: Peter Hill <zed.three@gmail.com>

dschwoerer · 2026-06-24T11:10:49Z

A couple of points that haven't been done:

@mrhardman pointed out some other operators that could potentially be ported, along with their checks Port some Hermes-3 finite volume operators #3200 (comment)

Sorry, I tried to follow to the comment, and from there to two PRs, but I failed to see what operators you would like to add here?
Do you also want to add them to these tests, or do you want to also port some of the non-orthogonal mesh tests to BOUT++?
I am not objecting to that, but could this be a separate PR?
This one already "blocks" #3392 and #3405.

there's now a lot of code in the fv_ops.hxx header -- if the set of possible CellEdges implementations is closed to what's in BOUT++, it would be possible to shift stuff out of the header and provide explicit instantiations of the template functions. This would probably speed up compilation, at the cost of being harder to add new limiters

✔️ done in #3405

Compile finite volume implementation only once

github-actions

clang-tidy made some suggestions

github-actions · 2026-06-24T16:11:10Z

 #include "bout/assert.hxx"
 #include "bout/bout_types.hxx"
+#include "bout/boutexception.hxx"
 #include "bout/build_defines.hxx"


warning: included header boutexception.hxx is not used directly [misc-include-cleaner]

Suggested change

#include "bout/build_defines.hxx"

#include "bout/build_defines.hxx"

github-actions · 2026-06-24T16:11:11Z

-#include <bout/mesh.hxx>
+
+#include <cmath>



warning: included header cmath is not used directly [misc-include-cleaner]

Suggested change

…ove-ops

Preview: Use cell area and volume for finite volume code

ZedThree and others added 15 commits March 11, 2026 12:48

Port FV::Div_par_mod from Hermes-3

5c6e3a7

Port FV::Div_par_fvv from Hermes-3

3059d12

Port Div_par_K_Grad_par_mod from Hermes-3

60f1946

Add MMS tests for finite volume operators

f53b8f3

Add tests for all FV slope limiters

207802f

Port Superbee finite volume limiter from Hermes-3

a230642

Includes bug fix: ```diff - BoutReal gL = n.c - n.L; - BoutReal gR = n.R - n.c; + BoutReal gL = n.c - n.m; + BoutReal gR = n.p - n.c; ```

Fix clang-tidy warnings for fv_ops

30dc670

Move check up

fcfe963

Ensure FCI path is always used for FCI

b209a5a

FV_div_par_fvv seems to be reduced order due to slope limiting character

e0480fc

Add doc to option

7ffc7fa

Co-authored-by: Peter Hill <peter.hill@york.ac.uk>

Merge remote-tracking branch 'origin/hermitespline' into HEAD

aa8e5d4

Merge branch 'f3dparallel' into move-ops

2d922ec

Merge branch 'f3dparallel' into move-ops

1aedd28

Merge branch 'f3dparallel' into move-ops

04d3ab3

dschwoerer mentioned this pull request Mar 20, 2026

Port some Hermes-3 finite volume operators #3200

Open

github-actions Bot reviewed Mar 20, 2026

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dschwoerer added 4 commits March 20, 2026 21:01

prek fixes

b2a7383

Merge branch 'next' of github.com:boutproject/BOUT-dev into move-ops

6400a1d

Remove unused header

24c9992

Merge branch 'cell_area_volume' into move-ops-area

b3ccacb

dschwoerer mentioned this pull request Jun 16, 2026

Preview: Use cell area and volume for finite volume code #3392

Merged

bshanahan self-assigned this Jun 16, 2026

dschwoerer added 4 commits June 17, 2026 10:47

Use cell area and volumes for div_par_mod

639808c

Use cell area and volumes for Div_par_fvv

5a2a3dc

Use cell area and volumes for Div_par

820e221

Also fill the boundaries to the extend possible

3b0117e

Merge branch 'next' of https://github.com/boutproject/BOUT-dev into m…

8aeea3d

…ove-ops

github-actions Bot reviewed Jun 22, 2026

View reviewed changes

Comment thread src/mesh/difops.cxx Outdated

Comment thread src/mesh/difops.cxx

Comment thread tests/MMS/spatial/finite-volume/fv_mms.cxx

dschwoerer and others added 13 commits June 23, 2026 14:30

Move implementations to different file

2e5367a

Add to cmake file

7a1a902

Add implementation file

392f842

Merge remote-tracking branch 'origin/next' into move-ops-area

cee53db

Merge branch 'move-ops' into move-ops-area

381af95

Improve code comments

e5ba73d

Co-authored-by: Peter Hill <zed.three@gmail.com>

Remove pre-C++20 fall back path

f8a2469

Apply clang-tidy fixes

8f8e035

Ensure calls to _compute_... are guarded

bc980b1

Add comment about impl header

9ff3c73

Add comments about explicit instantiation

b98954f

Do not return from critical areas

e68d165

Add missing header

a995360

dschwoerer and others added 4 commits June 24, 2026 13:12

Remove TRACE

5284cc1

Move critical section to compute functions

1672208

Add DDY template for expression

b89867d

Merge pull request #3405 from boutproject/move-ops-impl

e00a0a0

Compile finite volume implementation only once

github-actions Bot reviewed Jun 24, 2026

View reviewed changes

dschwoerer added 4 commits June 26, 2026 10:30

Merge branch 'next' of https://github.com/boutproject/BOUT-dev into m…

d914903

…ove-ops

Merge branch 'move-ops' into move-ops-area

586c06b

Add missing used header

26876b7

Merge pull request #3392 from boutproject/move-ops-area

30f42fc

Preview: Use cell area and volume for finite volume code

	#include "bout/build_defines.hxx"
	#include "bout/build_defines.hxx"

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dschwoerer commented Mar 20, 2026

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ZedThree commented Jun 18, 2026

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dschwoerer commented Jun 24, 2026

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