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127477

A Study of the Turbulent Flows behind a Rectangular Sharp Crested Weir in Open Channel Using Laser Doppler Velocimetry.

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Last updated: 04 Jan 2025

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Tags

Civil Engineering

Abstract

This paper describes the experimental investigation using laser Doppler velocimetry) (LDV) in the downstream of .be rectangular sharp crested weir in a horizontal rectangular  channel of constant width. The study was carried out for flows on smooth and rough weir. For  precise and accurate measurements of mean and fluctuating a ting flow characteristics such as streamwise and vertical turbulence intensity components and streamwise and vertical mean  velocity components. The depthwise measurements were carried out for different heights of the  weir along to e centerline at different cross sections downstream of weir in the wake region . The  results show that, the measured values of turbulence intensities are found to have high level of  turbulence in the Dear wake region but are low in the far wake region. The turbulence intensities  depict the occurrence of a constant turbulence close to the wall in the far wake region. The  roughness was found to increase the turbulence. Also, it can be seen that with increasing weir  height, the turbulence intensities are Increased.  

DOI

10.21608/bfemu.2020.127477

Authors

First Name

M.

Last Name

Attia

MiddleName

I.

Affiliation

Associate Professor., Water & Water Structures Engineering Department., Faculty of Engineering., Zagazig University., Zagazig., Egypt.

Email

-

City

Zagazig

Orcid

-

Volume

33

Article Issue

3

Related Issue

18958

Issue Date

2008-09-01

Receive Date

2008-07-11

Publish Date

2020-12-05

Page Start

1

Page End

11

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 33_Issue 3_Pages 1-11.pdf

PDF . 2.2MB

Link

https://bfemu.journals.ekb.eg/article_127477.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=127477

Order

5

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

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

MainTitle

A Study of the Turbulent Flows behind a Rectangular Sharp Crested Weir in Open Channel Using Laser Doppler Velocimetry.

Details

Type

Article

Created At

22 Jan 2023