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149992

Natural Convection From a Single Surface Heater in a Vertical Rectangular Enclosure.

Article

Last updated: 04 Jan 2025

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Tags

Mechanical Power Engineering

Abstract

Natural convection in a heated two-dimensional rectangular vertical enclosure is investigated numerically and experimentally for different single heater configurations. The partial differential equations governing the conservation of mass, momentum-order the Boussinesq assumption-and energy in the problem are solved numerically using the finite difference technique. The study is carried out for the steady laminar natural convection of air in a vertical enclosure with constant heat flux single heater at one adiabatic insulated vertical wall an isotherinally cooled opposing vertical wall and insulated horizontal walls. The range of parameters considered is pr=0.7.W/L=2, Ra≤107, and A=2.5, 0.L≤S≤H≤0.9 for the effect of heater location and S/H=0.4, H/L=2.4.6 and 8 for the effect of heater size, The results show great effect of the heater location and size on the flow and temperature distribution inside the enclosure and heat transfer from it. A best range of heater location and heater size corresponding to maximum heat transfer and minimum value of surface heater maximum temperature is determined by 0.1≤S/H≤0.5 AND h/l≥4 with correlations as follows: 0max=1.792 Ra0.18, Ṅu=0.74 Ra0.17 Experimental tests were conducted for the case of A=2. H/L=0.5, W/L=1.66 and Ra=7x104, 4.4x104 and 6.4x105 and 6.4x105. The experimental surface temperature and local Nusselt number were compared with the calculated results for the same case to show the validity of the numerical simulation

DOI

10.21608/bfemu.2021.149992

Authors

First Name

M.

Last Name

El-Kady

MiddleName

S.

Affiliation

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

Email

mselkady@mum.mans.eun.eg

City

Mansoura

Orcid

-

First Name

F.

Last Name

Araid

MiddleName

F.

Affiliation

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

Email

-

City

Mansoura

Orcid

-

Volume

23

Article Issue

3

Related Issue

21995

Issue Date

1998-09-01

Receive Date

1998-06-11

Publish Date

2020-09-01

Page Start

25

Page End

40

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 23_Issue 3_Pages 25-40.pdf

PDF . 214.5kB

Link

https://bfemu.journals.ekb.eg/article_149992.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=149992

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

Natural Convection From a Single Surface Heater in a Vertical Rectangular Enclosure.

Details

Type

Article

Created At

22 Jan 2023