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153135

Forced Convective Laminar flow in Elliptic Pipes of Different Aspect Ratios.

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Last updated: 22 Jan 2023

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Tags

Mechanical Power Engineering

Abstract

 The present analysis investigates non-Darcy forced convective heat transfer in a cylindrical pipe filled with spherical beads saturated with non-Newtonian drag reducing fluid. The cylindrical pipe is subjected to either a uniform heat flux (UHF) or a constant wall temperature (CWT). In modeling the flow, both the energy equation and a modified momentum (Darcy-Forschheimer-Brinkman) equation are used , in which the variable porosity, flow inertia, Brinkman viscous friction (non-Darcian effects) besides the elongational viscosity of drag reducing fluids are taken into consideration and the finite difference technique is used. The results are obtained for a non-Newtonian drag parameter range of 0≤up≤5000, and nondimensional pressure gradient B up to 108. The results show that the non-Newtonian character of drag reducing fluids have a significant influence on the entrance length, beat transfer characteristics and the temperature profiles.
Important results documenting and analyzing the behavior of the entrance length and the heat characteristics and its dependence on the non-Newtonian drag parameter are also reported. To examine the adequacy of the present heat transfer model. The governing equations were solved under conditions corresponding to those in Poulikakos and Renken [20]. The comparison of the calculated Nuf with that of Poulikakos and Renken[20]for d=3 and 5mm,up=0.0.05≤D≤0.15 and 104≤B≤106 shows good agreement and validates the presented heat transfer model.

DOI

10.21608/bfemu.2021.153135

Authors

First Name

Mohamed

Last Name

Mahgoub

MiddleName

Mohamed Ahmed

Affiliation

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

Email

mohamed_mahgoub@f-eng.tanta.edu.eg

City

Mansoura

Orcid

-

First Name

Mohamed

Last Name

Wasel

MiddleName

Gamal

Affiliation

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

Email

-

City

Mansoura

Orcid

-

First Name

A.

Last Name

Kamel

MiddleName

A.

Affiliation

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

Email

-

City

Mansoura

Orcid

-

First Name

Mohamed

Last Name

Mousa

MiddleName

Ghasoub Saafan

Affiliation

Professor, Mechanical power engineering Department, Faculty of Engineering, Mansoura University

Email

mgmousa@gmail.com

City

Mansoura

Orcid

-

Volume

21

Article Issue

4

Related Issue

22288

Issue Date

1996-12-01

Receive Date

1996-08-11

Publish Date

2021-12-01

Page Start

12

Page End

23

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 21_Issue 4_Pages 12-23.pdf

PDF . 1.8MB

Link

https://bfemu.journals.ekb.eg/article_153135.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=153135

Order

11

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

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Article

Created At

22 Jan 2023