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25870

EFFECT OF DRAG REDUCING POLYMER ADDITIVES ON FLOW THROUGH COMMERCIAL BENDS AND TEES.

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Last updated: 04 Jan 2025

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Abstract

Experimental studies of the total loss coefficient and pressure distribution, for turbulent Newtonian and drag reduction flows in bends and tees are presented. Dilute solutions of polyethylene glycol in water were used as the drag reducing fluids. Drag reduction was deduced from plots of experimental pipe flow data, on Prandtl-Karman coordinates. Two main test sections were studied. The first test section was a commercial 90° bend,while the second was a commercial tee section. The later test section was studied in different situations such as a distributer , a collector, a by-pass and a bend. Estimation of the total loss coefficient required an evaluation of a kinetic energy correction factor. Based on previous theoretical and experimental verifica-tions, this factor was determined from the friction factor Reynolds number pipe flow data, for the different flowing fluids. Thus, a reasonally accurate evaluation of the total loss coeffi-cient could be obtained. The results showed that drag reducing polymer additives cause a reduction in the total loss coefficient for all flow situations studied. Pressure distributions along the different sections were presented both with physical inter-pretations and discussion of some flow separation aspects. The results showed that the pressure distributions along the studied sections had the same trend for both Newtonian and drag reduction flows.

DOI

10.21608/asat.1989.25870

Authors

First Name

B.

Last Name

KHALIFA

MiddleName

A.

Affiliation

Professor, Department of Mechanical Power Engineering, Menoufia University, Shebin El-Kom, Egypt.

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First Name

K.

Last Name

IBRAHIM

MiddleName

A.

Affiliation

Associate Professor, Department of Mechanical Power Engineering, Menoufia University, Shebin El-Kom, Egypt.

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First Name

M.

Last Name

EMBABI

MiddleName

H.

Affiliation

Lecturer, Department of Mechanical Power Engineering, Menoufia University, Shebin El-Kom, Egypt.

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Orcid

-

First Name

M.

Last Name

FAKHARANI

MiddleName

S.

Affiliation

Graduate student, Department of Mechanical Power Engineering, Menoufia University, Shebin El-Kom, Egypt.

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Volume

3

Article Issue

ASAT Conference 4-6 April 1989 , CAIRO

Related Issue

4687

Issue Date

1989-04-01

Receive Date

2019-01-23

Publish Date

1989-04-01

Page Start

127

Page End

136

Print ISSN

2090-0678

Online ISSN

2636-364X

Link

https://asat.journals.ekb.eg/article_25870.html

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https://asat.journals.ekb.eg/service?article_code=25870

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11

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Original Article

Type Code

737

Publication Type

Journal

Publication Title

International Conference on Aerospace Sciences and Aviation Technology

Publication Link

https://asat.journals.ekb.eg/

MainTitle

EFFECT OF DRAG REDUCING POLYMER ADDITIVES ON FLOW THROUGH COMMERCIAL BENDS AND TEES.

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Article

Created At

22 Jan 2023