방법론
입력된 공정 분율, 제거량, 추가량, 동일 또는 상류 공정으로의 재순환으로 선언된 정상상태 물 및 성분 수지를 풉니다. 물과 성분의 폐합 오차를 각각 명시하며 폐합을 강제하기 위해 유량이나 질량을 정규화하지 않습니다.
The steady-state water network is written as F = b + A F and solved with deterministic pivoted Gauss-Jordan elimination.
Each process forwards its declared fraction of inlet flow to the next process. At the final process, forward flow is the final product stream.
The remainder is the waste-side flow. The entered recycle fraction applies to this waste split and returns only to the same process or an upstream process.
Constituent mass flow is water flow multiplied by concentration with unit conversion. At each node, removal is applied to inlet constituent mass, then the entered addition is applied, then the outlet constituent mass is split using the water-flow fractions.
Accumulation is assumed to be zero at steady state. Water and constituent closure errors are reported separately. Errors within the documented tolerance are reported as zero; the flows and masses are not normalized to force closure.
Water closure tolerance is max(1e-8 m³/d, external feed × 1e-10); constituent mass tolerance is max(1e-8 kg/d, (external mass + entered additions) × 1e-10).