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175893

Law of Velocity Distribution for Turbulent Boundary Layer with Adverse Pressure Gradient over Rough Surface.

Article

Last updated: 04 Jan 2025

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Subjects

-

Tags

Mechanical Power Engineering

Abstract

 The aim of this investigation is to obtain a law for the velocity distribution in turbulent boundary layer in the presence of different surface roughness and adverse pressure gradient. This work has been developed on the basis of experimental results of different investigators [1:4] land on the velocity law in turbulent flow over rough surface [5].
In order to obtain the numerical results for the mathematical solution outlined in this work, a computer program was constructed to perform all the necessary calculations. These results are presented in charts and can be utilised for the geometric shape of roughness. On these basis it is possible to study turbulent boundary layer for which the pressure distribution, and the ratio of the roughness height to the momentum thickness k/ᵟ  ⃰⃰⃰  ⃰⃰ are defined. Moreover, this work shows also that the constant of surface roughness function, Cr, varies with pressure gradient in form of Euler number for different ratios k/ᵟ  ⃰⃰⃰  ⃰⃰   . This contradicts suggestions of previous investigations. 
 
 
 
 

DOI

10.21608/bfemu.2021.175893

Authors

First Name

Samir

Last Name

Hanna

MiddleName

Francis

Affiliation

Assistant Professor., Mechanical Power Engineering Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt.

Email

-

City

Mansoura

Orcid

-

First Name

Berge

Last Name

Djebedjian

MiddleName

Ohaness

Affiliation

Mechanical Power Engineering Department., Faculty of Engineering., Mansoura University., El-Mansoura 35516., Egypt.

Email

bergedje@mans.edu.eg

City

Mansoura

Orcid

-

Volume

12

Article Issue

2

Related Issue

25313

Issue Date

1987-12-01

Receive Date

1987-08-12

Publish Date

2021-06-07

Page Start

1

Page End

14

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 12_Issue 2_Pages 1-14.pdf

PDF . 679.1kB

Link

https://bfemu.journals.ekb.eg/article_175893.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=175893

Order

16

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

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

MainTitle

Law of Velocity Distribution for Turbulent Boundary Layer with Adverse Pressure Gradient over Rough Surface.

Details

Type

Article

Created At

22 Jan 2023