physics.fluid.sluice_gate

Three distinct suites: educational examples on the calculator page, this legacy regression count (7/7 golden + boundary), and the CVP verification suite below. They are not the same number. Property, metamorphic, round-trip, O3, and interface statuses/checks are recorded in the CVP Manifest . SKIP (0/0) means that suite has no published vectors.

This calculator CURRENT · Public schema 1.0.0 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓

CVP verification suite

Protocol checks from the Evidence Manifest. Distinct from the legacy regression suite above. Verification revision 2026-10-28.meta-metrics-v2. Calculation version 1.0.0. CVP 1.0.0-proposed. 4/4 golden · 1/1 CVP boundary · 3/3 invalid · 1/1 property · 1/1 metamorphic · 8/8 O3 · 2/2 cross-interface · 6/6 CVP contract. digest 7b32512f920d. O2: Swamee free-flow sluice vs a separate-module identity (≤2 ULP). Not drowned y2, not orifice Cd/A/d, not Manning, and not a weir crest L. ≤2 ULP vs O3 applies only to the published tabulated sluice vectors. Not drowned y2, not orifice, not Manning, and not a weir crest L.

• Golden (oracle-backed) 4 / 4
• CVP boundary 1 / 1
• Invalid input 3 / 3
• Property 1 / 1
• Metamorphic 1 / 1
• O3 high-precision 8 / 8
• Cross-interface 2 / 2
• CVP contract 6 / 6
• Interfaces PASS · UI (SSR) / REST / MCP
• Interface claim ui-ssr is query-result HTML, not a live browser session. Error-path engine·REST·MCP 1/1 (status, code, calculation_version). SSR compared on URL-canonical requested calculations; empty query is idle (not an error) and JSON-typed object/array inputs are REST/MCP-only.
• Verified scope Swamee 1992 free-flow undershot sluice Q=C_d a b √(2g y1), + O3 mpmath tabulated Q.
• Assurance Engineering
• Deferred Not drowned y2, not orifice Cd/A/d, not Manning, not thin-plate L, not Parshall/ogee.

• release artifacts aligned PASS
• schema output required declared PASS
• schema valid input executes PASS
• engine success output validates schema PASS
• schema rejects incomplete input PASS
• rest success payload validates schema PASS

Fingerprint sha256:0d00c4513fbf4ac79d87cc25551e9628988fbd0d87046e721ae65c8f2e280544

Input schema sha256:d993969a4b3acc364286d780d544a7db26b4b305e6798a650b191be83ab5e457 · Output schema sha256:1909de81f8f197e73e2d1c6744a28fb0f9ac23b9faec82ccebd6a0cf168ccb40 · 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

sluice-gate

Engine

sluice-gate

Engine build

2026-09-24

Evidence core

2026-09-24T02:12:38.088Z

Rendered

2026-11-10T05:18:41.977Z

Last reviewed

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Assumptions

• Swamee 1992 free-flow undershot sluice: Q = C_d a b √(2g y1); C_d = 0.611 [(y1−a)/y1]^{0.072}; SI a, b, y1, Q; C_d is reported, not an input
• Gate opening a is not orifice area A; y1 is upstream depth, not weir H; a/y1∈[0.05, 0.65]; y1 > a; free flow only
• Not thin-plate weir, not tank orifice C_d A √(2gH), not a flume, not Manning n, not Q=Av, not submerged y2

Limitations

• Swamee 1992 free-flow undershot sluice: Q = C_d a b √(2g y1); C_d = 0.611 [(y1−a)/y1]^{0.072}; SI a, b, y1, Q; C_d is reported, not an input
• Gate opening a is not orifice area A; y1 is upstream depth, not weir H; a/y1∈[0.05, 0.65]; y1 > a; free flow only
• Not thin-plate weir, not tank orifice C_d A √(2gH), not a flume, not Manning n, not Q=Av, not submerged y2