physics.fluid.pipe_tee

• Golden tests 0 / 0
• Boundary tests 0 / 0
• Property tests 6 / 6
• Production surface contract 1 / 1
}
• 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 STALE (1 capability; 163 remain CURRENT) @ 2026-09-17T23:16:16.380Z
• Semantic contract PASS
• Evidence attested at 2026-09-17T23:04:34.157Z
• Last production check 2026-09-17T23:04:34.157Z
• Public / cache PASS
• Origin PASS
• Supplemental domain review Not performed
• Named expert review Not performed

• release artifacts aligned PASS

Fingerprint sha256:de70d79fa6d7b1fb4b32733d581c69ae1ea12d33e9891a661638ae432e476eec

Input schema sha256:3ed3522dc1f7f22a7988da7fe9016a7b55f737bdb09ece9cd2468d3111d1859f · Output schema sha256:fb05c5560318d746eabf56a4fd2799c910f65c7f3cf7af0844862fa41923ce91 · 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

pipe-tee

Engine

pipe-tee

Engine build

2026-09-17

Evidence core

2026-09-17T21:49:18.461Z

Rendered

2026-09-17T23:36:55.415Z

Last reviewed

—

Assumptions

• Equal-area sharp 90° T: h = K v_c² / (2g); K referenced to common-channel speed; K is reported, not an input
• Dividing: branch K=1+q², run K=0.4(1−q)². Combining: branch K=1+q², run K=1.55q−q². q=Q_path/Q_c in [0,1]; default g=9.80665 m/s²; default ρ=1000 kg/m³
• Not catalog minor-loss K given, not circular-arc R/D, not mitered n, not pipe-entrance geometry, not pipe-exit K=1, not a non-90° wye, not Q=Av

Limitations

• Equal-area sharp 90° T: h = K v_c² / (2g); K referenced to common-channel speed; K is reported, not an input
• Dividing: branch K=1+q², run K=0.4(1−q)². Combining: branch K=1+q², run K=1.55q−q². q=Q_path/Q_c in [0,1]; default g=9.80665; default ρ=1000 for Δp
• Not catalog minor-loss K given, not circular-arc R/D, not mitered n, not pipe-entrance geometry, not pipe-exit K=1, not a non-90° wye, not Q=Av