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Drag Reduction in Surfactant Solutions

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

Abstract

Although one of the first publications on drag reduction by additives deals with surfactant solutions, Mysels (1949), these types of additives have received less attention than others, especially polymers. However, in the past years this has changed because drag reducing surfactant solutions do not degrade over long periods of time. This is a definite advantage for practical applications, especially in closed flow circuits, and for studying the structure of turbulence under drag reducing conditions because the rheological solution properties and, consequently, the drag reduction do not change with time. Furthermore, systematic research studies in the chemical industry, documented by several European and U.S. patents, have led to the discovery of surfactant systems exhibiting drag reduction at surfactant concentrations below 100 ppm.

Keywords

Wall Shear Stress Surfactant Solution Drag Reduction Reynolds Shear Stress Normal Stress Difference 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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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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