Francois, NicolasAmarouchene, Y.Lounis, B.Kellay, H.2015-12-130295-5075http://hdl.handle.net/1885/80397The low Reynolds number flow of a polymer solution around a cylinder engenders a nonlinear drag force vs. the flow velocity. A velocity quench of such a flow gives rise to a long time relaxation and hysteresis of the stress due to history-dependent elastic effects. Our results suggest that such hysteretic behavior has its origin in the long time relaxation dynamics and hysteresis of the polymer conformations.200910.1209/0295-5075/86/340022015-12-11