physics.fluid.pump

• Golden tests 1 / 1
• Boundary tests 10 / 10
• Property tests 5 / 5
• Production surface contract 3 / 3
}
• Engine tested Yes
• Source checked Yes
• Artifact integrity PASS
• Production attestation Embedded snapshot: STALE · Last attested schema matched 1.0.0 snapshot / local build · Semantic contract ✓ · Last attestation PASS · current evidence changed · re-attestation required · Public/cache ✓ · Origin ✓ · Live production status PASS (0 stale; 163 CURRENT) @ 2026-09-17T03:09:03.307Z
• Semantic contract PASS
• Evidence attested at 2026-09-17T03:09:02.494Z
• Last production check 2026-09-17T03:09:02.494Z
• Public / cache PASS
• Origin PASS
• Supplemental domain review Not performed
• Named expert review Not performed

• release artifacts aligned PASS
• schema valid input executes PASS
• engine success output validates schema PASS

Fingerprint sha256:803bc660ae11a3eccb9051978d7e55b96c0deddaa00724191ac1990413eeb0f7

Input schema sha256:40679a1922b661cf8397d3a0b39f72c7ebe43092725a1f013141b13770d1b535 · Output schema sha256:96571cfaaac63c39da0ba12d54717ead1979be93e5717c2f3ddc3da0f21faab0 · Build-time SHA-256 digests prove published artifacts agree with each other (release_integrity.scope=workspace). Production attestation GETs canonical URLs twice (public/cached view and origin), including Capability HTML, via npm run attest:production --write (published at /.well-known/calculatorx-production-attestation.json) and fails if the public Capability page advertises a different calculation_version. This is artifact consistency, not an independent immutable release log.

Tool

pump-power

Engine

pump-power

Engine build

2026-09-17

Evidence core

2026-09-17T02:37:43.798Z

Rendered

2026-09-17T02:45:35.818Z

Last reviewed

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Assumptions

• Incompressible pump; P_h = ρ g Q H; P = P_h/η; default ρ=1000 kg/m³; η in (0, 1]
• Affinity: Q∝N D, H∝N² D², P∝N³ D³; geometrically similar; same fluid
• Not orifice, not weir, not Q=Av, not Darcy, not NPSH, not a catalog curve

Limitations

• Incompressible pump; P_h = ρ g Q H; P = P_h/η; default ρ=1000 kg/m³; η in (0, 1]
• Affinity: Q∝N D, H∝N² D², P∝N³ D³; geometrically similar; same fluid
• Not orifice, not weir, not Q=Av, not Darcy, not NPSH, not a catalog curve