Detecting vorticity in cohesive deformable granular material Olivier Bouillanne, Guilhem Mollon, Aurélien Saulot, Sylvie Descartes, Nathalie Serres, Karim Demmou and Guillaume Chassaing EPJ Web Conf., 249 (2021) 08005 Published online: 07 June 2021 DOI: 10.1051/epjconf/202124908005