Drag reduction by polymer threads
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J. Vleggaar; M. Tels
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Article
📅
1973
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Elsevier Science
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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