physics.fluid.weber

Three distinct suites: educational examples on the calculator page, this legacy regression count (17/17 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 2026-09-26.o2-o3. Calculation version 1.0.0. CVP 1.0.0-proposed. 4/4 golden · 9/9 CVP boundary · 10/10 invalid · 1/1 property · 1/1 metamorphic · 8/8 O3 · 2/2 cross-interface · 5/5 CVP contract. digest ae08aa375e31. O2: Weber vs a separate-module identity (≤2 ULP). Not Reynolds, not Froude, not Manning, and not Q=Av. ≤2 ULP vs O3 applies only to the published tabulated Weber vectors. Not Reynolds, not Froude, not Manning, and not Q=Av.

• Golden (oracle-backed) 4 / 4
• CVP boundary 9 / 9
• Invalid input 10 / 10
• Property 1 / 1
• Metamorphic 1 / 1
• O3 high-precision 8 / 8
• Cross-interface 2 / 2
• CVP contract 5 / 5
• 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 We = ρ v² L / σ, plus velocity, length, and σ solves, + O3 mpmath tabulated We.
• Assurance Engineering
• Deferred Not Reynolds, not Froude, not Manning, and not Q=Av.

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

Fingerprint sha256:b687685f53ddabe2c0be60fd58a59e6c87ad4b4d453286248d71c8d7e7fde52f

Input schema sha256:dbd0402b1341841a0462d20864bd331f1575d4d378da72aac7419186b8949152 · Output schema sha256:81966cd4b362872892078280aaa2a7adfa38b52de0f3f9cc5ae9eb42981d1e5b · 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

weber-number

Engine

weber-number

Engine build

2026-09-17

Evidence core

2026-09-17T07:09:31.087Z

Rendered

2026-11-10T05:18:41.938Z

Last reviewed

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Assumptions

• Weber We = ρ v² L / σ
• Inertia vs surface tension; σ is interfacial tension, not viscosity μ
• Not Reynolds, not Froude, not Manning, not Q=Av, not capillary Ca=μv/σ

Limitations

• Weber We = ρ v² L / σ
• Inertia vs surface tension; σ is interfacial tension, not viscosity μ
• Not Reynolds, not Froude, not Manning, not Q=Av, not capillary Ca=μv/σ