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Document source HDF5 for nonlinear OSWEC motion fixture - #280

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cmccomb merged 1 commit into
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codex/oswec-nonlinear-h5-provenance
Oct 13, 2026
Merged

cmccomb merged 1 commit into
masterfrom
codex/oswec-nonlinear-h5-provenance

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@cmccomb

@cmccomb cmccomb commented Oct 13, 2026

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Purpose

Record the source-matched HDF5 needed to reproduce the published OSWEC nonlinear visualization motion comparison. The checked-in example HDF5 is not interchangeable with the pinned source file.

Evidence

The R2025b refinement artifact contains oswec.h5 with SHA-256 72664d60037698350513d6481d4114db79fe2cf8984247a13ff16e980c52d31f. Its excitation has 36 headings, versus 10 in examples/data/oswec.h5; its infinite-frequency added-mass matrix also differs (maximum coefficient difference 0.001659007). This note prevents a portable test from silently pairing the published trajectory with the wrong coefficients.

Verification

  • Recomputed SHA-256 and inspected both HDF5 files with h5py.
  • git diff --check.

No parity classification or badge changes.

@cmccomb
cmccomb merged commit 93c6131 into master Oct 13, 2026
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