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Drag reduction by centrally-injected polymer “threads”

✍ Scribed by J. W. Hoyt; R. H. J. Sellin


Publisher
Springer-Verlag
Year
1988
Tongue
English
Weight
801 KB
Volume
27
Category
Article
ISSN
0035-4511

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Drag reduction by polymer threads
✍ J. Vleggaar; M. Tels 📂 Article 📅 1973 🏛 Elsevier Science 🌐 English ⚖ 559 KB

Ahstraet-A novel type of drag reduction is described which is caused by long polymer threads in turbulent flow. These threads are formed by axial injection of a concentrated, visco-elastic, polymer solution and persist over a distance of more than 200 tube diameters. The observed drag reduction is p