55 lines
1.9 KiB
Markdown
55 lines
1.9 KiB
Markdown
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---
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name: evolv-process-hydraulics-mass-balance
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description: Engineer process hydraulics and mass-balance consistency across EVOLV nodes. Use when validating flow/volume/level relationships, retention-time assumptions, split/merge behavior, and physically plausible cross-node transport dynamics.
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---
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# EVOLV Process Hydraulics Mass Balance
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## Mission
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Preserve physically coherent hydraulics and conservation behavior across interacting EVOLV process nodes.
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## Harness Execution Contract
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- Build a flow and accumulation map from current node contracts.
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- Define invariants before edits:
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- no unplanned conservation breaks
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- split/merge behavior remains deterministic
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- retention/transport assumptions are explicit
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- Validate with scenario-based balance checks.
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## Scope
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- `nodes/reactor/`
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- `nodes/settler/`
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- `nodes/pumpingStation/`
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- `nodes/valve/`, `nodes/valveGroupControl/`
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## Workflow
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1. Identify control volumes and interfaces.
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2. Map inflow/outflow/storage terms and units.
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3. Validate steady-state and transient behavior under typical scenarios.
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4. Check edge cases: zero flow, reverse flow, surge, overflow.
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5. Confirm output contracts preserve balance observability.
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## Standards
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- Keep units and sign conventions explicit.
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- Avoid hidden source/sink terms.
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- Document retention-time and mixing assumptions.
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- Preserve existing contracts unless migration is defined.
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## Test Expectations
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Cover:
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- mass/volume conservation under nominal operation
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- split/merge and bypass edge cases
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- boundary condition behavior at zero/low/high flow
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- numeric stability under long-run ticks
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## Deliverables
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Return:
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- balance model and assumptions
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- changed files/tests with scenario evidence
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- unresolved hydraulic risks and required field checks
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Decision interview triggers:
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- changes to balance assumptions affecting KPI/compliance outputs
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- compatibility-breaking payload/topic changes for flow/volume data
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- startup behavior changes with overflow/dry-run implications
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