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125078

Performance of Three-Dimensional 180°-Curved Diffuser.

Article

Last updated: 04 Jan 2025

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-

Tags

Mechanical Power Engineering

Abstract

Flow characteristics in AR=2, AS = 2, 180° curved diffuser is investigated experimentally by a 5-hole Pitot tube, The Pitot tube is calibrated by a special orientation mechanism to get a calibration data file to be processed by the multi-probe program. Measurements of the three velocity components (u, v, w), total and static pressures for the inlet and six downstream sections located at 30° intervals from the diffuser inlet, from convex to concave walls and top to bottom walls. The wall static pressures in the inid-span between the top and bottom walls at convex and concave walls were measured. Contours of the third velocity component show the secondary motion clearly induced by the movement of fluid from convex to concave wall and reverse. The maximum transverse velocity is about 20% of inlet mean velocity as a result of low aspect ratio of the diffuser exit. The overall pressure recovery achieved was 25.6% of the inlet dynamic pressure due to separation and recirculation occurred at the convex wall. These measurements can be used for the validation and inprovement of the turbulence models that used to simulate the flow inside the curved diffuser. It was found that the models predict a later 

DOI

10.21608/bfemu.2020.125078

Authors

First Name

H.

Last Name

Mansour

MiddleName

-

Affiliation

Mechanical Power Engineering Department, Faculty of Engineering, Mansoura University, El-Mansoura 35516, Egypt

Email

mnhsaadanyh@yahoo.com

City

Mansoura

Orcid

-

First Name

M.

Last Name

Mohamed

MiddleName

Safwat

Affiliation

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

Email

msafwat@mans.edu.eg

City

Mansoura

Orcid

-

First Name

Berge

Last Name

Djebedjian

MiddleName

Ohaness

Affiliation

Professor of Mechanical Power Engineering Department., Faculty of Engineering., Mansoura University., El-Mansoura 35516., Egypt.

Email

bergedje@mans.edu.eg

City

Mansoura

Orcid

-

First Name

Sherif

Last Name

Yousry

MiddleName

A.

Affiliation

Instructor., Mechanical Power Engineering Department., Faculty of Engineering., Mansoura University., El-Mansoura 35516., Egypt.

Email

sherif.yousry@hotmail.com

City

Mansoura

Orcid

-

Volume

35

Article Issue

3

Related Issue

18592

Issue Date

2010-09-01

Receive Date

2010-07-11

Publish Date

2020-09-01

Page Start

27

Page End

43

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 35_Issue 3_Pages 27-43.pdf

PDF . 273.8kB

Link

https://bfemu.journals.ekb.eg/article_125078.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=125078

Order

6

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

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

MainTitle

Performance of Three-Dimensional 180°-Curved Diffuser.

Details

Type

Article

Created At

22 Jan 2023