Drag Reduction in Polymer Solutions

  • A. Gyr
  • H.-W. Bewersdorff
Part of the Fluid Mechanics and Its Applications book series (FMIA, volume 32)


As mentioned in the introduction, the effect manifests in a decrease of pressure loss over a fixed length of a straight pipe compared with a flow of Newtonian fluids through the same pipe section at the same Reynolds numbers for Reynolds numbers which are higher than a certain critical value. This fact is equivalent to a reduction of the friction factor due to the added polymers, see Fig. 1.2 & 1.3. In this gross flow behaviour of the friction factor the main characteristics of drag reducing flows by polymers can already be observed.


Flow Field Polymer Solution Wall Shear Stress Friction Factor Newtonian Fluid 
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Copyright information

© Springer Science+Business Media Dordrecht 1995

Authors and Affiliations

  • A. Gyr
    • 1
  • H.-W. Bewersdorff
    • 2
  1. 1.Institute of Hydromechanics and Water Resources ManagementSwiss Federal Institute of TechnologyZürichSwitzerland
  2. 2.Department of Chemistry and Chemical EngineeringFachhochschule LausitzSenftenbergGermany

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