Turbulent drag reduction by polymers: A quantitative theory

Gregory Ryskin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

104 Scopus citations


By use of the recently proposed model of the dynamics of a macromolecule in transient extensional flows, the effective viscosity increase in turbulence due to unraveling macromolecules is calculated, and a relation between this viscosity increase and a drag reduction parameter (the slope increment) is derived. The predictions of the theory are in good agreement with experiment.

Original languageEnglish (US)
Pages (from-to)2059-2062
Number of pages4
JournalPhysical review letters
Issue number18
StatePublished - 1987

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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