the rectangular broad crested weirs are widely used to measure the water dischargewhich is one of the most popular tools in the irrigation canals particularly, in developingcountries.the present article is trying to demonstrate the results of an experimental work carriedout on rectangular broad crested weir with sloped upstream face to investigate the effect ofupstream slope on discharge effici...

Weirs are simple control structures usually built across channels for water storage and measurementof flow rates. The main target of the present study is to numerically simulate experimentally thehydraulic performance circular crested normal weirs. For numerical simulation, commercialpackage ANSYS CFX utilized adopting tetrahedrons mesh with a maximum total number 1932301elements, while, experi...

The interest in Piano Key weirs (PKW) was increasing over the past years, both in terms of application and hydraulic research. Several systematic model test series were performed and published so far, originating from different hydraulic laboratories around the world. Therein, the key geometric parameters dominating the hydraulic capacity of PKWs were identified as developed crest length, trans...

Weirs, as overflow structures, are extensively used for the measurement of flow, its diversion and control in the open canals. Labyrinth weir due to more effective length than conventional weirs, allows passing more discharge in narrow canals. Determination the design criteria for the practical application of these weirs need more investigation. Weir angle and its position relative to the flow ...

A detailed experimental laboratory analysis of the effect crest shape on discharge coefficient sharp-crested weirs is presented in paper. The experiments were conducted for four different shapes. and analyses show that capacity, particular, are significantly affected by weir height. It stated conclusion rounded has highest capacity. In practice, sharp crested generally preferred to other shapes...

The purpose of this research is examining the performance rectangular broad and sharp crested weirs in terms cavity index discharge coefficient. For purpose, a computational fluid dynamics CFD code FLUENT applied. Firstly, verified by applies on experiments work Hagre et al 1994 results show excellent agreements between Hager 1994. Secondly applied both weirs. demonstrate that have lower coeffi...