Compute volumetric flow rate from inlet and throat cross-section areas A₁ and A₂, differential pressure ΔP and fluid density by the Venturi equation, for flowmeter selection and online flow accounting.
输入入口/喉部面积 A1、A2 与压差 ΔP、密度 ρ,求流量。
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Venturi flow rate | Q = C_d·A₂·√(2Δp/(ρ(1−β⁴))) | Giovanni Battista Venturi, 1797 |
| Discharge coefficient | Venturi C_d≈0.95–0.99 | ISO 5167 |