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105095

DETERMINATION OF MANNING ROUGHNESS COEFFICIENT FOR BORDER IRRIGATION SYSTEM

Article

Last updated: 04 Jan 2025

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Tags

Agricultural Irrigation and Drainage Engineering

Abstract

Manning roughness coefficient "n" is one of the most important factors affecting the border irrigation design. The purpose of this study is to determine the Manning roughness coefficient values "n" for border irrigation in a clay loam soil with compacted and un-compacted soil under continuous and surge flow. The determination was based on the volume balance equation in the form of a differential equation that was solved with the forward finite difference. The results indicated that, soil surface compaction had its effect on n values of the first irrigation and had not any effect for the next irrigations. For continuous flow, at first irrigation, the values of n were 0.1915 and 0.164 for un-compacted and compacted soils respectively. At the second irrigation, the n values decreased by about 44.51% and 49.82% compared to the first irrigation for compacted and un-compacted soil respectively. However, after the second irrigation, the seedling of wheat resulted on increases the n values.  The minimum value, 0.083, of n was achieved at the second irrigation for surge flow. While, the maximum value, 0.25, of n was found at the seventh irrigation for continuous flow. Also, by using surge flow, the n values were decreased compared with those for continuous flow without vegetation crop or with wheat crop.

DOI

10.21608/mjae.2011.105095

Authors

First Name

M. A.

Last Name

Kassem

MiddleName

-

Affiliation

Assoc. Prof., Ag. Eng. Dept., Fac. of Ag., Cairo Univ., Egypt.

Email

-

City

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Orcid

-

First Name

M. I.

Last Name

Ghonimy

MiddleName

-

Affiliation

Prof., Ag. Eng. Dept., Fac. of Ag., Cairo Univ., Egypt.

Email

-

City

-

Orcid

-

Volume

28

Article Issue

2

Related Issue

15907

Issue Date

2011-04-01

Receive Date

2020-07-26

Publish Date

2011-04-01

Page Start

302

Page End

323

Print ISSN

1687-384X

Online ISSN

2636-3062

Article File

MJAE_Volume 28_Issue 2_Pages 302-323.pdf

PDF . 820.3kB

Link

https://mjae.journals.ekb.eg/article_105095.html

Detail API

https://mjae.journals.ekb.eg/service?article_code=105095

Order

4

Type

Original Article

Type Code

1,326

Publication Type

Journal

Publication Title

Misr Journal of Agricultural Engineering

Publication Link

https://mjae.journals.ekb.eg/

MainTitle

DETERMINATION OF MANNING ROUGHNESS COEFFICIENT FOR BORDER IRRIGATION SYSTEM

Details

Type

Article

Created At

23 Jan 2023