Properties of flow through and over gravel basket weir
Other Title(s)
خصائص الجريان فوق و خلال هدارات سلال الحصى
Joint Authors
Husayn, Bshkuj Sidqi
Jalil, Shakir Abd al-Latif
Qasim, Jihan Mahmud
Qasim, Sarhan Abd al-Sattar
Source
Journal of University of Babylon for Engineering Sciences
Issue
Vol. 27, Issue 3 (30 Sep. 2019), pp.127-136, 10 p.
Publisher
Publication Date
2019-09-30
Country of Publication
Iraq
No. of Pages
10
Main Subjects
Earth Sciences, Water and Environment
Civil Engineering
Abstract EN
Construction of gravel basket weir in waterways causes water accumulation in front of this porous structure less than solid weir.
in the present study the upstream flow depth, water surface profile and discharge coefficient are investigated through laboratory experiments.
four different weir lengths (15, 20, 25 and 30 cm) and four different degrees of gravel coarseness (1.13, 1.58, 2.19 and 2.27) are studied.
accordingly, sixteen models are tested under different free flow conditions.
analysis of the results show that in "through flow" regime the increase in weir length raises the generated upstream depth for all coarseness degrees by 30% while coarseness lowers the depth by 28%.
in "transition flow", however, doubling the length increases the flow depth by 7%, but increasing coarseness from 1.13 to 2.72 cm mean diameter causes 7% reduction in flow depth.
the "overflow" regime begins to appear when the depth to length ratio equals 0.75 for long weir, and about 1.54 for shortest weir.
a comparison between gravel basket weir and corresponding solid weir indicates that average depth reduction is 7.5% for coarseness of 1.13 cm and 9% for coarseness of 2.72 cm.
mathematical models for water depth prediction for the three flow regimes are presented.
for "overflow" an empirical formula is proposed to estimate the coefficient of discharge with acceptable accuracy.
American Psychological Association (APA)
Jalil, Shakir Abd al-Latif& Qasim, Sarhan Abd al-Sattar& Qasim, Jihan Mahmud& Husayn, Bshkuj Sidqi. 2019. Properties of flow through and over gravel basket weir. Journal of University of Babylon for Engineering Sciences،Vol. 27, no. 3, pp.127-136.
https://search.emarefa.net/detail/BIM-936686
Modern Language Association (MLA)
Jalil, Shakir Abd al-Latif…[et al.]. Properties of flow through and over gravel basket weir. Journal of University of Babylon for Engineering Sciences Vol. 27, no. 3 (2019), pp.127-136.
https://search.emarefa.net/detail/BIM-936686
American Medical Association (AMA)
Jalil, Shakir Abd al-Latif& Qasim, Sarhan Abd al-Sattar& Qasim, Jihan Mahmud& Husayn, Bshkuj Sidqi. Properties of flow through and over gravel basket weir. Journal of University of Babylon for Engineering Sciences. 2019. Vol. 27, no. 3, pp.127-136.
https://search.emarefa.net/detail/BIM-936686
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 134-135
Record ID
BIM-936686