Lagrangian and Eulerian aspects of turbulent flows with polymers - representative results

Lagrangian and Eulerian aspects of turbulent flows with polymers - representativeĀ results

This presentation summarizes our work on turbulent flow with dilute polymers in both Lagrangian and Eulerian settings, emphasizing the similarity and differences. The results were obtained experimentally, using particle image velocimetry and particle tracking velocimetry. We have measured Lagrangian evolution of material lines and surfaces as well as rates of decay of turbulent kinetic energy and vorticity-velocity mixed quantities. The results point to a clear route of effect of minute amounts of dilute polymers on turbulence, outside of the drag reduction effect.

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Alex Liberzon

April 20, 2013
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