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176997

Investigation of the Constant of Surface Roughness Function.

Article

Last updated: 22 Jan 2023

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Subjects

-

Tags

Mechanical Power Engineering

Abstract

The main objective of this paper is to throw some light on the constant of surface roughness function. Many investigators related that constant to the surface roughness density defined as the ratio of the total surface area is the roughness area. Others introduced alternative definition, to be the ratio of the total surface area to the total roughness frontal area normal to the flow. 
The influence of pressure gradient is not considered by those investigators. Moreover, they suggested a unique value for this constant in the presence of pressure gradient. 
In this research, the analytical study of the constant of surface roughness function regarding the pressure gradient in form of Euler number. shows variable values for different ratios of k / ẟ٭٭. 

DOI

10.21608/bfemu.2021.176997

Authors

First Name

Samir

Last Name

Hanna

MiddleName

F.

Affiliation

Electrical 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., El-Mansoura University., El-Mansoura 35516., Egypt.

Email

bergedje@mans.edu.eg

City

Mansoura

Orcid

-

Volume

10

Article Issue

1

Related Issue

25502

Issue Date

1985-06-01

Receive Date

1985-04-16

Publish Date

2021-06-01

Page Start

1

Page End

5

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 10_Issue 1_Pages 1-5.pdf

PDF . 47.7kB

Link

https://bfemu.journals.ekb.eg/article_176997.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=176997

Order

9

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