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160939

An Experimental Investigation on Flow Field in a Dump Combustor Model.

Article

Last updated: 22 Jan 2023

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Subjects

-

Tags

Mechanical Power Engineering

Abstract

The flow field characteristics in a dump combustor model is investigated experimentally. In this paper. The model consists of a square cross-section area duct with a sudden enlargement chamber followed by a convergent nozzle. Attention is focused on finding the effect of nozzle existence4 at the end of the chamber, the chamber length, and the Renold's number ( based on the step height and inlet maximum velocity ) on the wall pressure distribution, the axial centerline velocity and pressure, the velocity profiles, the recirculation zone size and the reattachment length.
The results are compared with the corresponding results when the nozzle is absent. The results indicate that the reattachment length, the recirculation zone, and the redevelopment after reattachment is almost the same in the case without nozzle and when chamber length is 8.65 step height with nozzle existence. The wall pressure exhibits a substantial increase just before the nozzle, entrance, while it continues its decrease, in the case without nozzle, because of viscous friction. The results show also that the redevelopment zone following the reattachment shrinks as the chamber length decrease. The reattachment occurs inside the nozzle when the chamber length becomes 4.65 step height. The change in Reynold's number shows a small effect on the wall pressure distribution.

DOI

10.21608/bfemu.2021.160939

Authors

First Name

Ahmed

Last Name

Slleem

MiddleName

-

Affiliation

Assistant Professor of Mechanical Power Engineering Department, Faculty of Engineering, Menoufia University, Shiben El-Kom, Egypt.

Email

-

City

Shiben El-Kom

Orcid

-

First Name

E.

Last Name

Wahba

MiddleName

A.

Affiliation

Mechanical Power Engineering Department, Faculty of Engineering, Menoufia University, Shiben El-Kom, Egypt.

Email

-

City

Shiben El-Kom

Orcid

-

First Name

M.

Last Name

Naser

MiddleName

-

Affiliation

Mechanical Power Engineering Department, Faculty of Engineering, Menoufia University, Shiben El-Kom, Egypt.

Email

-

City

Shiben El-Kom

Orcid

-

Volume

20

Article Issue

1

Related Issue

23470

Issue Date

1995-03-01

Receive Date

1995-01-11

Publish Date

2020-03-01

Page Start

169

Page End

180

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 20_Issue 1_Pages 169-180.pdf

PDF . 489.8kB

Link

https://bfemu.journals.ekb.eg/article_160939.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=160939

Order

19

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