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114481

EXPERIMENTAL STUDY OF NATURAL CONVECTION HEAT TRANSFER THROUGH HORIZONTAL OPEN ENDED EQUILATERAL TRIANGULAR CHANNELS

Article

Last updated: 26 Dec 2024

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Subjects

-

Tags

Mechanical, Power, Production, Design and Mechatronics Engineering.

Abstract

Experimental study of natural convection heat transfer inside smooth and rough surfaces of horizontal equilateral triangular channels with a uniformly heated surface are performed. The effect of smooth and rough surface of average roughness, ra = 0.02μm, on the heat transfer characteristics are studied. The local and average heat transfer coefficients and Nusselt number are obtained for smooth and rough channel at different Rayleigh numbers from 6.45 × 105 to 4.45 × 106. The findings show that the values of temperature difference between the inside surface and ambient air increase with increase of axial distance from both ends of the channel until a maximum value at the middle of the channel. The results show a higher values of local (Nux) for rough channel along the axial distance compared with the smooth channel. The average Num of rough channel is higher than Num of smooth channel by about 7%. The results obtained are correlated using dimensionless groups for both rough and smooth surfaces of the equilateral horizontal triangular channels.

DOI

10.21608/jesaun.2012.114481

Keywords

Natural convection, Constant Heat Flux, Horizontal Triangular Channels, Rough surface, Smooth surface

Authors

First Name

Hany A.

Last Name

Mohamed

MiddleName

-

Affiliation

Mechanical Engineering Department, Faculty of Engineering, Assiut University, Assiut, Egypt

Email

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City

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Orcid

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First Name

Mohamed A.

Last Name

Omara

MiddleName

-

Affiliation

Mechanical Engineering Department, Faculty of Industrial Education, Suez Canal University, Suez, Egypt

Email

-

City

-

Orcid

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First Name

Mahmoud S.

Last Name

Ahmed

MiddleName

-

Affiliation

Mechanical Engineering Department, Faculty of Industrial Education, Sohag University, Sohag, Egypt

Email

-

City

-

Orcid

-

First Name

Mohamed F.

Last Name

Abdeen

MiddleName

-

Affiliation

Instructor, Industrial Technical Institute of Sohag, Sohag, Egypt

Email

-

City

-

Orcid

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Volume

40

Article Issue

No 4

Related Issue

16870

Issue Date

2012-07-01

Receive Date

2012-05-06

Publish Date

2012-07-01

Page Start

1,091

Page End

1,103

Print ISSN

1687-0530

Online ISSN

2356-8550

Article File

JESAUN_Volume 40_Issue No 4_Pages 1091-1103.pdf

PDF . 264.8kB

Link

https://jesaun.journals.ekb.eg/article_114481.html

Detail API

https://jesaun.journals.ekb.eg/service?article_code=114481

Order

9

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

EXPERIMENTAL STUDY OF NATURAL CONVECTION HEAT TRANSFER THROUGH HORIZONTAL OPEN ENDED EQUILATERAL TRIANGULAR CHANNELS

Details

Type

Article

Created At

23 Jan 2023