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.
The Effect of a Cationic Surfactant on Turbulent Flow Patterns
Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division August 30, 2002; revision received June 18, 2003. Associate Editor: G. P. Peterson.
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Hetsroni , G., Mosyak , A., Talmon , Y., Bernheim-Groswasser , A., and Zakin , J. L. (September 23, 2003). "The Effect of a Cationic Surfactant on Turbulent Flow Patterns ." ASME. J. Heat Transfer. October 2003; 125(5): 947–950. https://doi.org/10.1115/1.1609482
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