Submesh infrastructure, region labels, and projected normals - #119

Merged

lmoresi merged 37 commits into

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feature/region-ds-cell-labels

Apr 22, 2026

Commits on Apr 22, 2026

Add cell region labels to AnnulusInternalBoundary
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8a4e101
Add air-layer comparison script for Region DS verification
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bddc2bd
Add visualization notebook and checkpointing for Region DS comparison
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4482f25
Add pinned-air and Nitsche comparison scripts
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daf9190
Add DMPlexFilter submesh extraction — machine-precision match
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a954cba
Add investigation: air incompressibility dominates penalty comparison
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f2c6a4c
DG pressure dramatically improves air-layer velocity near interface
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3dda64d
DMComposite probe: works but designed for combining, not subdividing
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87def3b
Add submesh solver architecture design document
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85f348d
Add submesh solver architecture design doc
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4f4ace4
Update design: extract_region as minimum viable, evaluate for transfer
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9deae0b
Fix: use .array not .data in design doc examples
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d46490b
Design: IS-based restrict/prolongate as primary transfer path
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92fd45f
Design: separate meshes, separate variables, explicit copies
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b167fc7
Design: mesh deformation and adaptation propagation
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b72793a
Design: expression safety — one mesh per expression
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0bc5a73
Design: promote expression safety to principle #4
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d50ca4b
Add Mesh.extract_region() for submesh extraction
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086eaeb
Add restrict/prolongate for parent-submesh data transfer
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537fc9b
Fix restrict/prolongate: use numpy.array() to avoid callback errors
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4e1d4a3
Add copy_into and add_into for parent/submesh data transfer
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5f223bd
Add mixed-mesh expression detection in solver and extract_meshes utility
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5fa7f39
Add mixed-mesh check to uw.function.evaluate()
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c5f84e8
Auto-sync submesh coordinates when parent mesh deforms
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9be30a0
Update visualization notebook with eta=1e-5 and three-way overlay
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bceb7b0
Add MPI parallel tests for submesh infrastructure
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b1ced54
Preserve internal boundaries during mesh adaptation
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79160c7
Auto re-extract submeshes when parent mesh adapts
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2c7e23d
Transfer variable data during mesh adaptation
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de2c324
Add coupled submesh demonstration: thermal-Stokes with gravity
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ecc4b45
Add mask parameter to add_nitsche_bc and coupled submesh demo
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00fba4a
Add mesh.Gamma_P1: projected P1 boundary normals
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528eddb
Default Nitsche normals now use Gamma_P1 (projected P1)
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fcc32f3
Add region labels to SphericalShellInternalBoundary, deprecate boundary_normals
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49845c8
Add region labels to BoxInternalBoundary via centroid classification
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f2dbe20
Rebase onto development; fix DMPlexFilter signature for PETSc 3.25
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f8e3bef
Fix _check_expression_meshes: check parameters, not flux property
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7dc50d4