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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| Format: | Article |
| Language: | English |
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2009
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| Online Access: | http://scholars.utp.edu.my/id/eprint/2449/ http://scholars.utp.edu.my/id/eprint/2449/1/JNNFM_published.pdf |
| _version_ | 1848659251677888512 |
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| author | Japper-Jaafar, Azuraien Escudier, Marcel Poole, Robert |
| author_facet | Japper-Jaafar, Azuraien Escudier, Marcel Poole, Robert |
| author_sort | Japper-Jaafar, Azuraien |
| building | UTP Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-13T07:27:28Z |
| format | Article |
| id | oai:scholars.utp.edu.my:2449 |
| institution | Universiti Teknologi Petronas |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-13T07:27:28Z |
| publishDate | 2009 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | oai:scholars.utp.edu.my:24492017-01-19T08:25:43Z http://scholars.utp.edu.my/id/eprint/2449/ 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 en http://scholars.utp.edu.my/id/eprint/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. |
| 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 |
| title | 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_short | 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 |
| topic | TJ Mechanical engineering and machinery |
| url | http://scholars.utp.edu.my/id/eprint/2449/ http://scholars.utp.edu.my/id/eprint/2449/1/JNNFM_published.pdf |