The effect of a cationic surfactant on turbulent flow of patterns

G. Hetsroni, A. Mosyak, Y. Talmon, A. Bernheim-Groswasser, J. L. Zakin

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The thermal pattern on a heated wall was studied for the flow of water and drag-reducing surfactant solutions in a channel. The wall of the channel was made of a thin foil, which was heated by direct current. The temperature of the foil, which reflects the local flow velocities, was measured by an infrared technique with high spatial and temperature resolution. The microstructure of the surfactant solution was studied by direct imaging cryogenic temperature transmission electron microscopy (Cryo-TEM). The most prevalent structures observed are thread-like micelles, which have been suggested to cause the modification of the thermal patterns.

Original languageEnglish
Pages (from-to)947-950
Number of pages4
JournalJournal of Heat Transfer
Volume125
Issue number5
DOIs
StatePublished - 1 Oct 2003

Keywords

  • Heat transfer
  • Microstructures
  • Non-Newtonian
  • Polymers
  • Rheological
  • Thermal
  • Turbulence
  • Visualization
  • Vortex

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