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99368

Kinetic Energy and Momentum Coefficients for Egyptian Irrigation Canals.

Article

Last updated: 22 Jan 2023

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Subjects

-

Tags

Irrigation and Hydraulic Engineering

Abstract

The main objective of this research work is to investigate the energy coefficient (α) and momentum coefficient (β) for some Egyptian irrigation canals. Six cases of study from them having different degrees, starting from rayyahs to distributer canals with 10 successive cross sections for each reach, were carefully selected with discharge values ranged from 489.7 m3/s to 0.4 m3/s. The different properties and flow characteristics of each cross section were obtained. The arithmetic method was used in the computation process of α and β values due to its accuracy using a prepared excel program to facilitate the calculations. It was found that the computed values of α and β approximately match with Chow's table with average values of about 1.30 and 1.11 respectively, for canals under study, which could be used for field applications. It was also found that the average values of α and β for each canal increased with the increase of the canal degree but the maximum and the minimum values may be independent of the canal degree. General relationships relating α and β for each canal and for all canals under study have been derived. Moreover, correlation relationships for both α and β with a ratio correlating maximum and mean velocities ( ), Manning's roughness coefficient (n), and different values of discharge and channel characteristics were performed. The cross section properties had intangible effect on the values of both α and β but these values were strongly dependent on the velocity distribution shape. Froude number had a pronounced effect on the value of α and β but Reynolds number could have a negligible effect.

DOI

10.21608/bfemu.2020.99368

Keywords

Energy coefficient, Momentum coefficient, Egyptian irrigation canals, Manning’s coefficient, Froude Number, Reynolds number

Authors

First Name

A.

Last Name

Zidan

MiddleName

R.

Affiliation

Prof., Irrigation & Hydraulics Dept., Fac. of Engrg., EL-Mansoura Univ

Email

-

City

-

Orcid

-

First Name

M.

Last Name

Abdalla

MiddleName

G.

Affiliation

Assistant Prof., Irrigation & Hydraulics Dept., Fac. of Engrg., EL-Mansoura Univ

Email

-

City

-

Orcid

-

First Name

S.

Last Name

Khalaf

MiddleName

-

Affiliation

Lecturer, Irrigation & Hydraulics Dept., Fac. of Engrg., EL-Mansoura Univ

Email

-

City

-

Orcid

-

First Name

A.

Last Name

Saqr

MiddleName

M.

Affiliation

Demonstrator, Irrigation & Hydraulics Dept., Fac. of Engrg., EL-Mansoura Univ

Email

-

City

-

Orcid

-

Volume

41

Article Issue

1

Related Issue

14715

Issue Date

2016-03-01

Receive Date

2016-02-07

Publish Date

2020-06-30

Page Start

1

Page End

16

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 41_Issue 1_Pages 1-16.pdf

PDF . 1.5MB

Link

https://bfemu.journals.ekb.eg/article_99368.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=99368

Order

8

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

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

MainTitle

-

Details

Type

Article

Created At

22 Jan 2023