JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING, vol.134, no.1, pp.89-95, 2008 (SCI-Expanded)
Article / Article
JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING
Science Citation Index Expanded (SCI-EXPANDED), Scopus
discharge measurement, open channel flow, subcritical flow, Supercritical flow, weirs, RECTANGULAR FREE OVERFALL, FLOW MEASUREMENT, CHANNELS
Middle East Technical University Affiliated:
The behavior of free surface flow at a rectangular free overfall is studied experimentally to obtain a relation between the brink depth and the flow rate. A series of experiments were conducted in a tilting flume with wide range of flow rates covering subcritical, critical, supercritical regimes, and two different roughnesses in order to develop a relationship between the discharge and the brink depth. An equation is proposed to determine the flow rate using the brink depth for a channel of known roughness and bed slope.