Characterizing elastic turbulence in the three-dimensional von Karman swirling flow using the Oldroyd-B model
Reinier van Buel,
Holger Stark
Abstract:We present the full three-dimensional numerical investigation of the von Kármán swirling flow between two parallel plates using the Oldroyd-B model and characterize the onset and development of elastic turbulence. We quantify the flow state with the secondary-flow strength, a measure of the average strength of the velocity fluctuations, and then define an order parameter as the time average of the secondary-flow strength. The order parameter displays a subcritical transition from the laminar to a bistable flow… Show more
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