Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Characteristics of Hydrofoil Weirs
The symmetric Joukowsky profile is investigated for its performance as a weir profile both under free flow and submerged flow conditions. The discharge coefficient is found to be a function of head and eccentricity factor, which defines the weir geometry. The discharge coefficient increases with profile thickness and crest curvature. The boundary layer effects on this particular weir coefficient are very small. The discharge coefficient is found to be about 15 to 20% higher (on average) than the conventional rectangular broad-crested weir. Under submerged flow conditions, the thinner hydrofoil weirs are found to possess a higher submergence limit (80% and more), which varies with head. The discharge reduction factor for a given submergence is found to be smaller than that of a Crump Weir. The overall performance of hydrofoil weir is found to be superior and is therefore recommended for flow measurement in open channels.
Characteristics of Hydrofoil Weirs
The symmetric Joukowsky profile is investigated for its performance as a weir profile both under free flow and submerged flow conditions. The discharge coefficient is found to be a function of head and eccentricity factor, which defines the weir geometry. The discharge coefficient increases with profile thickness and crest curvature. The boundary layer effects on this particular weir coefficient are very small. The discharge coefficient is found to be about 15 to 20% higher (on average) than the conventional rectangular broad-crested weir. Under submerged flow conditions, the thinner hydrofoil weirs are found to possess a higher submergence limit (80% and more), which varies with head. The discharge reduction factor for a given submergence is found to be smaller than that of a Crump Weir. The overall performance of hydrofoil weir is found to be superior and is therefore recommended for flow measurement in open channels.
Characteristics of Hydrofoil Weirs
Rao, Nagar S. Lakshmana (Autor:in) / Rao, M. V. Jagannadha (Autor:in)
Journal of the Hydraulics Division ; 99 ; 259-283
01.01.2021
251973-01-01 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Discussion of “Characteristics of Hydrofoil Weirs”
| ASCE | 2021
Closure to “Characteristics of Hydrofoil Weirs”
| ASCE | 2021
| Taylor & Francis Verlag | 2020
Characteristics of Proportional Weirs
| ASCE | 2021
Chain weirs, chain-needle weirs and self-opening chain-needle weirs
| Engineering Index Backfile | 1925