@article{Freyssingeas_Frelat_Dossmann_Géminard_2016, title={Knife-bladed vortices in non-Newtonian fluids}, volume={8}, url={https://www.papersinphysics.org/papersinphysics/article/view/335}, DOI={10.4279/pip.080007}, abstractNote={<p>A tank is filled with a non-Newtonian fluid. We report on the deformation of the free surface resulting from the presence of an underlying vortex.  In a tiny range of the experimental parameters, the flow spontaneously loses its initial axi-symmetry, leading to the formation of a stationary knife-bladed vortex. We report on the series of patterns observed experimentally and summarize the conditions of existence of the latter by establishing a state diagram.</p><div><p><strong>Received:</strong> 1 July  2016, <strong> </strong><strong>Accepted:</strong> 24 October  2016; <strong>Edited by:</strong> J. P. Hulin; <strong>Reviewed by:</strong> C. Nouar, LEMTA, Université de Lorraine, Nancy, France; <strong>DOI:</strong> http://dx.doi.org/10.4279/PIP.080007</p><p><strong>Cite as:</strong> E Freyssingeas, D Frelat, Y Dossmann,  J-C Géminard, Papers in Physics 8, 080007 (2016)</p>This paper, by <a rel="cc:attributionURL" href="http://dx.doi.org/10.4279/PIP.080007">E Freyssingeas, D Frelat, Y Dossmann,  J-C Géminard</a>, is licensed under the <a rel="license" href="http://creativecommons.org/licenses/by/3.0/">Creative Commons Attribution License 3.0</a>.</div><p> </p>}, journal={Papers in Physics}, author={Freyssingeas, Eric and Frelat, Damien and Dossmann, Yvan and Géminard, Jean-Christophe}, year={2016}, month={Nov.}, pages={080007} }