A new approach for deducing the stage-discharge relationship of a triangular broad-crested device. (June 2022)

• Record Type: Journal Article
• Authors: Nicosia, Alessio; Ferro, Vito
• Is Part Of: Flow measurement and instrumentation. Volume 85(2022)
• Publication Date: 2022-06
• Subjects: Broad-crested weir -- Open channel flow -- Stage-discharge relationship -- Dimensional analysis -- Self-similarity; Fluid dynamic measurements -- Periodicals; Flow meters -- Periodicals; Fluides, Dynamique des -- Mesure -- Périodiques; Débitmètres -- Périodiques; 681.2805
• DOI: 10.1016/j.flowmeasinst.2022.102160
• Languages: English
• ISSNs: 0955-5986

Abstract

Abstract: In this paper, the outflow process of a triangular broad-crested device is examined using the dimensional analysis and the incomplete self-similarity theory. A new theoretical stage-discharge relationship is proposed, and its applicability is verified using measurements available in literature. The proposed power equation is characterized by a coefficient depending on device apex angle and a constant value of the exponent. Highlights: A power theoretical stage-discharge relationship of the device is proposed. The coefficient of the stage-discharge depends on device apex angle. The coefficient of the stage-discharge equation is constant. The errors in discharge estimate are not systematic and are normally distributed.