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Heterogeneous Drag Reduction Concepts and Consequences
Journal article

Heterogeneous Drag Reduction Concepts and Consequences

  • Hoyer, Klaus W. Engineering Specialist, Eidetics Corporation, 3425 Lomita Blvd., Torrance, CA 90505
  • Gyr, Albert Institute of Hydromechanics and Water Resources Management, Swiss Federal Institute of Technology, Zurich, Switzerland
  • 1998-12-1
Published in:
  • Journal of Fluids Engineering. - ASME International. - 1998, vol. 120, no. 4, p. 818-823
Mechanical Engineering
English This paper deals with the nature of the heterogeneous drag reduction which occurs in turbulent pipe flows when a concentrated polymer solution is injected into the pipe center. According to earlier concepts, the achieved drag reduction is due to a direct, large-scale interaction of the viscoelastic polymer thread with the turbulent flow field. The authors prove that the heterogeneous drag reduction originates exclusively from agglomerates of dissolved polymer molecules present in the flow.
Language
  • English
Open access status
closed
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Persistent URL
https://sonar.ch/global/documents/276891
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