Lucke, T; Beecham, S and Qu, Y Y (2016) Estimating flow rates through individual outlets of siphonic roof drainage systems. Building Research & Information, 44(3), pp. 289-300. ISSN 0961-3218
Abstract
An experimental investigation is used to quantify the flow rates through individual outlets of multi-outlet siphonic roof drainage systems under both full-pipe and partially filled pipe flow conditions. A pressure transducer and a propeller-type current meter were installed within each tailpipe to measure water depth and flow velocity. The study tests the hypothesis that it may be possible to predict accurately the flow rates through individual outlets of multi-outlet siphonic roof drainage systems. A new technique of estimating flow rates is trialled by comparing instantaneous pressure transducer and current meter readings with previously calibrated flow data to find the best data match. The study results were very positive and clearly demonstrate that the underlying methodology was appropriate and that it may be possible to model numerically the individual outlet flow rates in multi-outlet siphonic roof drainage systems.;An experimental investigation is used to quantify the flow rates through individual outlets of multi-outlet siphonic roof drainage systems under both full-pipe and partially filled pipe flow conditions. A pressure transducer and a propeller-type current meter were installed within each tailpipe to measure water depth and flow velocity. The study tests the hypothesis that it may be possible to predict accurately the flow rates through individual outlets of multi-outlet siphonic roof drainage systems. A new technique of estimating flow rates is trialled by comparing instantaneous pressure transducer and current meter readings with previously calibrated flow data to find the best data match. The study results were very positive and clearly demonstrate that the underlying methodology was appropriate and that it may be possible to model numerically the individual outlet flow rates in multi-outlet siphonic roof drainage systems.;
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | pressure fluctuations; siphonic roof drainage; open channel flow; flow measurement; drainage systems; roofs; drainage; flow velocity; roofing; stormwater; pressure transducers |
| Index terms: | investigation, drainage, stormwater, siphonic roof drainage, estimating, methodology, pressure fluctuation, roof, roofing, pressure transducer, open channel flow |
| Subjects: | financial and cost management, computer vision, infrastructure and transport systems, fluid mechanics, design practice, environmental engineering, data collection methods, research methods |
| Topics: | Sustainability, Cost Management, Digital Applications, Research Practice, Engineering Principles, Design Practice |
| Descriptive scope: | 4 PCTA |
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