Flow Estimation from Flap‐Gate Monitoring

作者：Roger Burrows, G. A. Ockleston, K. H. M. Ali · 发表于：Water and Environment Journal · 年份：1997 · DOI：10.1111/j.1747-6593.1997.tb00990.x · 被引用次数：14 · 研究领域：Hydraulic flow and structures、Hydrology and Sediment Transport Processes、Flood Risk Assessment and Management

Abstract The measurement of flows and recording of storm events at combined sewer overflows are a key requirement in effective urban pollution management. Staff of Thames Water Utilities have developed a low‐cost system based on monitoring the behaviour of flap valves on numerous major river outfalls. The paper presents the development of a modelling approach based on the principle of conservation of angular momentum and its application to experimental data for circular gates. Flow‐prediction accuracies, based on the measurement of gate inclination and water depths, in the range ± 20–30%, are found to be achievable for wider gate openings (<20°) – the recommended calibration offering conservative flow predictions at lower angles.