Conservation and numerical validity
- Mass, energy, and flux balance
- Grid and timestep convergence
- Numerical error and invariant checks
METHOD / REPRODUCIBILITY / CLAIM CONTROL
The objective is not a favourable plot but an auditable chain: the question can fail, the model assumptions are described, controls precede interpretation, and the conclusion does not exceed the evidence.
01 / EVIDENCE LADDER
Each transition requires a new evidence class; wording cannot turn a numerical PoC into a laboratory result.
A proposed mechanism
No result yetAn observable from one calculation
Requires robustness checksA documented series under one model
Bounded by equations and parametersA linked chain of controls and stress tests
Supports a mechanism at model levelAn independent physical experiment
Tests correspondence with realityA reproducible physical measurement
Not automatically industrial readinessCASE / DB1
In DB1, the localized interface response survives controls. This supports interface organisation within the models considered. A strengthening claim requires separate mechanical tests; three such branches did not support an improvement. The positive interface result and negative mechanical result are therefore retained together.
See the DB1 checks and split verdict ↗02 / WORKFLOW
Specific tests change with the physics; the verification logic remains stable.
Translate the idea into state variables, observables, assumptions, and an outcome that can fail.
Choose equations, discretisation, boundaries, initial conditions, and diagnostics appropriate to the question.
Add passive, null, negative, ablation, conservation, and numerical-validity controls before interpreting a favourable branch.
Sweep parameters, seeds, perturbations, and resolutions; retain negative and failure results.
Separate model-level evidence from assumptions, artefacts, untested extrapolation, and laboratory claims.
Deliver the agreed methods, diagnostics, limitations, and a clear laboratory or engineering follow-up, under the project access terms.
03 / CONTROL FAMILIES
Not every project requires every test, but omitting a family must be justified.
04 / CLAIM ADMISSION GATE
Admit → reproducible · robust · bounded
Retain → negative · ambiguous · open
Do not transfer → model effect into physical validation
A numerical result establishes model behaviour under stated assumptions and does not replace independent laboratory validation.