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Turbulent pipe flow of a drag reducing, rigid “rod-like” polymer solution

Fully-developed turbulent pipe flow of an aqueous solution of a rigid “rod-like” polymer, scleroglucan, at concentrations of 0.005% w/w and 0.01% w/w has been investigated experimentally. Fanning friction factors were determined from pressure-drop measurements for the Newtonian solvent (water) and t...

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Main Authors: Japper-Jaafar, Azuraien, Escudier, Marcel, Poole, Robert
Format: Article
Published: 2009
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utp.edu.my/2449/1/JNNFM_published.pdf
http://eprints.utp.edu.my/2449/
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spelling my.utp.eprints.24492017-01-19T08:25:43Z Turbulent pipe flow of a drag reducing, rigid “rod-like” polymer solution Japper-Jaafar, Azuraien Escudier, Marcel Poole, Robert TJ Mechanical engineering and machinery Fully-developed turbulent pipe flow of an aqueous solution of a rigid “rod-like” polymer, scleroglucan, at concentrations of 0.005% w/w and 0.01% w/w has been investigated experimentally. Fanning friction factors were determined from pressure-drop measurements for the Newtonian solvent (water) and the polymer solutions and so levels of drag-reduction for the latter. Mean axial velocity u and complete Reynolds normal-stress data, i.e. u', v' and w', were measured by means of a laser Doppler anemometer at three different Reynolds numbers for each fluid. The measurements indicate that the effectiveness of scleroglucan as a drag-reducing agent is only mildly dependent on Reynolds number. The turbulence structure essentially resembles that of flexible polymer solutions which also lead to low levels of drag reduction. 2009 Article PeerReviewed application/pdf http://eprints.utp.edu.my/2449/1/JNNFM_published.pdf Japper-Jaafar, Azuraien and Escudier, Marcel and Poole, Robert (2009) Turbulent pipe flow of a drag reducing, rigid “rod-like” polymer solution. J. Non-Newtonian Fluid Mech., 161 . pp. 86-93. http://eprints.utp.edu.my/2449/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Japper-Jaafar, Azuraien
Escudier, Marcel
Poole, Robert
Turbulent pipe flow of a drag reducing, rigid “rod-like” polymer solution
description Fully-developed turbulent pipe flow of an aqueous solution of a rigid “rod-like” polymer, scleroglucan, at concentrations of 0.005% w/w and 0.01% w/w has been investigated experimentally. Fanning friction factors were determined from pressure-drop measurements for the Newtonian solvent (water) and the polymer solutions and so levels of drag-reduction for the latter. Mean axial velocity u and complete Reynolds normal-stress data, i.e. u', v' and w', were measured by means of a laser Doppler anemometer at three different Reynolds numbers for each fluid. The measurements indicate that the effectiveness of scleroglucan as a drag-reducing agent is only mildly dependent on Reynolds number. The turbulence structure essentially resembles that of flexible polymer solutions which also lead to low levels of drag reduction.
format Article
author Japper-Jaafar, Azuraien
Escudier, Marcel
Poole, Robert
author_facet Japper-Jaafar, Azuraien
Escudier, Marcel
Poole, Robert
author_sort Japper-Jaafar, Azuraien
title Turbulent pipe flow of a drag reducing, rigid “rod-like” polymer solution
title_short Turbulent pipe flow of a drag reducing, rigid “rod-like” polymer solution
title_full Turbulent pipe flow of a drag reducing, rigid “rod-like” polymer solution
title_fullStr Turbulent pipe flow of a drag reducing, rigid “rod-like” polymer solution
title_full_unstemmed Turbulent pipe flow of a drag reducing, rigid “rod-like” polymer solution
title_sort turbulent pipe flow of a drag reducing, rigid “rod-like” polymer solution
publishDate 2009
url http://eprints.utp.edu.my/2449/1/JNNFM_published.pdf
http://eprints.utp.edu.my/2449/
_version_ 1738655194165542912
score 13.244368

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