Detecting vorticity in cohesive deformable granular materialOlivier Bouillanne, Guilhem Mollon, Aurélien Saulot, Sylvie Descartes, Nathalie Serres, Karim Demmou and Guillaume ChassaingEPJ Web Conf., 249 (2021) 08005DOI: https://doi.org/10.1051/epjconf/202124908005