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96397

Effect of Upstream Accumulated Sediments on Fayoum Type Weir Efficiency.

Article

Last updated: 04 Jan 2025

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Subjects

-

Tags

Irrigation and Hydraulic Engineering

Abstract

Under various conditions of flows in open channels with time, sediments are accumulated gradually upstream weirs. Accumulated sediments upstream weirs cause the back water curve and discharge coefficient (Cd) of weirs to change. For this reason, the effect of four different models of accumulated sediments on the discharge coefficient and the maximum height of backwater curve (Z) of Fayoum type weir (narrow crested weir) had been experimentally investigated. In this research, four values of discharges equal to 8 lit. /sec., 10 lit. /sec., 13 lit. /sec. and 15 lit. /sec. were used. From the analysis of results, compared with the case of no sediments, it was observed that with the increasing of accumulated sediments, the head over weir crest (H) decreased by about 16 % and consequently, the discharge coefficient of weir increased by about 38 %. The maximum height of back drawdown water curve upstream weir (Z) decreased gradually with the increasing of accumulated sediments by about 5.3%. For the aforementioned analysis, it is recommended to eliminate all of accumulated sediments upstream Fayoum type weirs for improving the performance.

DOI

10.21608/bfemu.2020.96397

Keywords

sediments, Fayoum weirs, Open channels, experimental work

Authors

First Name

Mohammed

Last Name

El-Gamal

MiddleName

Ibrahiem Ibrahiem Mohammed

Affiliation

Lecturers- Irrigation and Hydraulics Dept., Faculty of Engineering, Mansoura University, Egypt

Email

mimi_elgamal@yahoo.com

City

-

Orcid

-

First Name

Mohamed

Last Name

Abdel Hady

MiddleName

Ahmed

Affiliation

Lecturers- Irrigation and Hydraulics Dept., Faculty of Engineering, Mansoura University, Egypt

Email

ma_abdelhady@yahoo.com

City

-

Orcid

-

Volume

40

Article Issue

5

Related Issue

14486

Issue Date

2015-12-01

Receive Date

2015-12-06

Publish Date

2021-12-01

Page Start

38

Page End

48

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 40_Issue 5_Pages 38-48.pdf

PDF . 1.3MB

Link

https://bfemu.journals.ekb.eg/article_96397.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=96397

Order

20

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

Effect of Upstream Accumulated Sediments on Fayoum Type Weir Efficiency.

Details

Type

Article

Created At

22 Jan 2023