Secondary flows in turbulent surfactant solutions at maximum drag reduction |
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| Authors: | Albert Gyr Johannes Bühler |
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| Affiliation: | 1. Department of Chemistry, Sardar Patel University, Vallabhvidyanagar 388120, India;2. Chemistry Division, Bhabha Atomic Research Center (BARC), Mumbai 400085, India;3. Shah Schulman Center for Surface Science and Nanotechnology, Dharmsinh Desai University, Nadiad 387001, India |
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| Abstract: | Secondary flows are always present when a turbulent Newtonian fluid flows through a square duct. We show that they are suppressed in surfactant solutions at maximum drag reduction. This result confirms the one-dimensional behaviour of such flows, which is caused by the alignment of the micelles. |
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