Experiments on the influence of a cationic surfactant additive (C14TASal+NaBr) on grid generated turbulence and on the wakes of circular cylinders indicate a change in the structure of the turbulence. The results described here show that the fluctuations perpendicular to the main flow direction are reduced and that the eduction of coherent vortices is shifted to higher critical Reynolds numbers.


Circular Cylinder Cationic Surfactant Strouhal Number Critical Micelle Concen Critical Shear Rate 
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Copyright information

© Elsevier Science Publishers Ltd 1990

Authors and Affiliations

  • J. Dohmann
    • 1
  1. 1.Lehrstuhl Energieprozeßtechnik, Fachbereich ChemietechnikUniversität DortmundDortmund 50Germany

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