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123780

HYDRAULICS OF SURFACE POLLUTED WATER - JET IN OPEN CHANNEL FLOW

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Last updated: 04 Jan 2025

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Subjects

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Tags

Civil Engineering: structural, Geotechnical, reinforced concrete and s…nd sanitary engineering, Hydraulic, Railway, construction Management.

Abstract

Presented in this paper are the results of an intensive experimental program for studying the influence of jet inclination, velocity ratio, pollutant type and initial concentration on hydraulic characteristics of polluted surface water jet in open channel flow. Polluted jet is injected from a sided polluted source with different angles of inclination to mainstream direction. The polluted water is prepared by adding two types of chemicals (sodium chloride and pfennig) with different concentrations to fresh water. The initial jet velocity is varied to cover a range of velocity ratio R from 2.73 to 10.0. For each velocity ratio, the solute concentration is changed to take 800, 1050, 1382.23, 1440, 1780 and 2320 p.p.m .The centerline jet trajectory, velocity decay, pollutant dilution and the width of polluted area are measured. The velocity is measured by a calibrated current meter while the jet coordinates and water depths are measured using point gages. Samples are taken from jet centerline to measure the jet concentration. The concentrations are measured using Conductance /Total Dissolved Solids Model 76. The factors influencing the problem are normalized with the help of dimensional analysis theory. The analysis of the results revealed that the characteristics of a polluted water jet in cross-flow depend mainly on jet to main stream velocity ratio and jet inclination to the main stream. Also, the decay of the velocity and dilution of pollution concentration are mainly depending on the studied parameters. The type of pollution does not affect these characteristics. Equations have been developed for the correlation of the experimental results. A comparison between the results of present study and those from previous studies are carried out. These comparisons give a reasonable agreement.

DOI

10.21608/jesaun.2010.123780

Keywords

Open channels, Surface discharging jets, Pollutant concentration and type

Authors

First Name

Nashat A.

Last Name

Ali

MiddleName

-

Affiliation

Professors of hydraulics & water resources, Civil Eng. Dept., Assiut Univ., 71516 Assiut.

Email

-

City

-

Orcid

-

First Name

Gamal

Last Name

Abozeid

MiddleName

-

Affiliation

Professors of hydraulics & water resources, Civil Eng. Dept., Assiut Univ., 71516 Assiut.

Email

-

City

-

Orcid

-

First Name

Ali A.

Last Name

Mohamed

MiddleName

-

Affiliation

Associate Professor, Civil Engineering Dept., Assiut University, 71516 Assiut

Email

-

City

-

Orcid

-

First Name

Moustafa S.

Last Name

Darweesh

MiddleName

-

Affiliation

Demonstrator, Civil Eng. Dept., Assiut University, 71516 Assiut

Email

eng_taftaf82@yahoo.com

City

-

Orcid

-

Volume

38

Article Issue

No 1

Related Issue

16624

Issue Date

2010-01-01

Receive Date

2009-10-27

Publish Date

2010-01-01

Page Start

71

Page End

84

Print ISSN

1687-0530

Online ISSN

2356-8550

Article File

JESAUN_Volume 38_Issue No 1_Pages 71-84.pdf

PDF . 245.3kB

Link

https://jesaun.journals.ekb.eg/article_123780.html

Detail API

https://jesaun.journals.ekb.eg/service?article_code=123780

Order

5

Type

Research Paper

Type Code

1,438

Publication Type

Journal

Publication Title

JES. Journal of Engineering Sciences

Publication Link

https://jesaun.journals.ekb.eg/

MainTitle

HYDRAULICS OF SURFACE POLLUTED WATER - JET IN OPEN CHANNEL FLOW

Details

Type

Article

Created At

23 Jan 2023