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131871

Laminar Free Convection from an Elliptic Tube Placed in a Microplar Fluid with Vertical Plate as a Special Case.

Article

Last updated: 04 Jan 2025

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Tags

Mechanical Power Engineering

Abstract

 In this paper laminar free convection heat transfer from a horizontal isothermal elliptic tube placed in a micropolar fluid with its major axis vertical is investigated. The governing equations basd on the conservation of mass, linear momentum, angular momentum and energey are numerically solved using the Fourier Spectral method. The main controlling parameters, beside the material parameters of the micropolar fluid, are the Rayleigh number, the Prandil number and the elliptic section axis ratio The micropolar fluid parameters are the vortex Viscosity, micro-inertia density and Spin gradient viscosity The results, which were obtained for a range of these parameters, were carried Out. at two axis ratios of 0.5 and 0.025. The axis ratio of 0.025 approximates the geometry of the special case of vertical flat plate. The results for vertical plate placed in Newtonian fluid arc compared with the relevant results in the literature and very good agreement was obtained. The study has shown that the vortex viscosity is the frost influencing material parameter on heat transfer rate. 
The study showed that as the vortex viscosity increases the heat transfer rate decreases. 

DOI

10.21608/bfemu.2020.131871

Keywords

Micropolar fluid, Free convectioon, Microrotation, Elliptic tube

Authors

First Name

F.

Last Name

Mahfouz

MiddleName

M.

Affiliation

Mechanical Power Department, Faculty of Engineering, Menoufia University, Shebin El-kom, Egypt

Email

-

City

Menoufia

Orcid

-

Volume

30

Article Issue

4

Related Issue

19437

Issue Date

2005-12-01

Receive Date

2005-09-11

Publish Date

2020-12-23

Page Start

1

Page End

14

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 30_Issue 4_Pages 1-14.pdf

PDF . 178.3kB

Link

https://bfemu.journals.ekb.eg/article_131871.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=131871

Order

31

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

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

MainTitle

Laminar Free Convection from an Elliptic Tube Placed in a Microplar Fluid with Vertical Plate as a Special Case.

Details

Type

Article

Created At

22 Jan 2023