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169668

Drag Coefficient of Single Spherical Particle in Drag Reducing Polymer Fluids.

Article

Last updated: 22 Jan 2023

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Tags

Mechanical Power Engineering

Abstract

An experimental study for the drag of solid spheres in drag reducing Fluids is presented. Polyacrylamide solutions of different concentrations are considered. The drag coefficient is measured by tie terminal velocity of the spherical particle falling in stagnant fluid using high speed camera, Compared to Newtonian Fluid results, the drag of solid particle in polymer solutions exhibit reduced values. However, a drag increase Is exhibited at low Reynolds number. Analysis of the data show the presence of a critical Reynolds number that distinguish between the drag increase and drag reduction regions. It has been postulated that the measured drag is a result of two opposing effects of polymer additives. One is flow resistance increase due to increased extensional viscosity. The other, is the reduction in the form drag due to the influence of these additives on vortex shedding and boundary layer separation. It has been found that the experimental data of drag coefficient is best correlated with the polymer -particle parameter ᴓ or Weissenberg number Ws as well as Reynolds number. 

DOI

10.21608/bfemu.2021.169668

Authors

First Name

L.

Last Name

Rabie

MiddleName

H.

Affiliation

Mechanical Engineering Department., Faculty of Engineering., Mansoura University., Mansoura., 35516., Egypt.

Email

-

City

Mansoura

Orcid

-

First Name

M.

Last Name

Kamel

MiddleName

M.

Affiliation

Mechanical Engineering Department., Faculty of Engineering., Cairo University., Cairo., Egypt.

Email

-

City

Mansoura

Orcid

-

Volume

16

Article Issue

1

Related Issue

24660

Issue Date

1991-05-01

Receive Date

1991-01-09

Publish Date

2021-05-01

Page Start

38

Page End

52

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 16_Issue 1_Pages 38-52.pdf

PDF . 159.0kB

Link

https://bfemu.journals.ekb.eg/article_169668.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=169668

Order

18

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

Type

Article

Created At

22 Jan 2023