Méthodologie
Calcule le stockage utilisable, le renouvellement nominal et la continuité d’inventaire par intervalle selon les débits entrants/sortants et durées déclarés. Le renouvellement nominal n’est ni l’âge réel de l’eau, ni la RTD, ni le temps de contact traceur T10 ou le CT; l’outil ne calcule pas T10.
Usable storage = gross storage × user-entered usable fraction. Operational storage is separately entered as a declared operating-storage basis and remains a subset of usable storage.
Nominal turnover time = usable storage / average throughput; nominal turnovers/day = average throughput / usable storage.
Interval continuity uses Snext = Scurrent + (Qin − Qout) × duration. When physical limits are enabled, overflow is recorded above the maximum and supply shortfall below the minimum; the modeled endpoint is limited to the applicable bound.
Working storage swing = maximum modeled inventory − minimum modeled inventory, including initial inventory and all modeled interval endpoints.