ALEX BLYTHE · 2026-09-21 · RETAINED-EVIDENCE CORRECTION AUDIT

HX-CFD-QUAL-01 V2.1 acceptance-path correction

A bounded audit of the evaluator and retained fine-grid continuation evidence. No CFD was rerun, and the historical qualification disposition was not rescored.

Current disposition

DIAGNOSTIC_CORRECTION_COMPLETE

HX-CFD-QUAL-01 remains FAILED_NUMERICAL_GATES. Mesh independence remains NOT_EVALUATED. HX-03 and HX-04 remain blocked.

What was corrected

The field-stationarity predicate now requires non-empty finite normalized RMS updates at or below the frozen 0.001 limit. The prior predicate checked only that values were greater than zero.
The continuation analyzer now reports the retained surfaceFieldValue rows through 1000 s instead of claiming that post-800 s monitor rows were absent.

Retained continuation evidence

Quantity	Result	Interpretation
Shell outlet temperature span, 800–1000 s	0.002804 K	Supporting evidence; not a qualification pass
Tube outlet temperature span, 800–1000 s	0.001040 K	Supporting evidence; not a qualification pass
Tube U global normalized RMS, 900–1000 s	0.000762	Below the declared global stationarity limit for this interval
Tube U declared local normalized RMS	0.000791	Not a valid localized manifold metric; the mask covers 98.646% of tube cells

Evidence limits that remain

The declared x ≤ 0.05 m mask contains 391,955 of 397,335 tube cells. It does not isolate the inlet manifold.
Field comparisons are positional/truncated rather than proven by explicit cell identity or topology correspondence.
Endpoint p/p_rgh values include negatives while the declared property-pressure interval begins at 0 Pa. Pressure-reference semantics remain NOT_ESTABLISHED.
Full hot/cold energy-storage closure and integrated conductive interface heat-rate evidence remain unresolved in this branch.

Artifact integrity

Continuation source immutability remains true. The corrected continuation manifest is parseable and verifies 219 artifacts with 0 missing and 0 mismatches.

Download Markdown report · Download structured results · Verification

Next authorized step

Repair the local-region definition, explicit field correspondence, pressure-reference interpretation, and complete energy/interface evidence in a versioned acceptance contract. Then decide whether a fresh three-grid campaign is warranted. No qualification or mesh comparison is authorized by this audit.

Prepared by Alex Blythe · Report date: September 21, 2026. This is an evidence correction, not a design release or experimental validation.