Gostelow, J. Paul Garrett, Stephen J. Rona, Aldo Adebayo, David S. Stability modes in vortex structure formation: Canonical examples for rotating components Three rather different physical cases have been studied. All represent very practical geometries for which the modal behavior of vortex structures is not completely understood. The work on these problems is ongoing with the objective of obtaining physical confirmation, enhanced understanding and predictive capability for the vortex structures encountered in rotating machines. IR content 2016-05-04
    https://figshare.le.ac.uk/articles/conference_contribution/Stability_modes_in_vortex_structure_formation_Canonical_examples_for_rotating_components/10172651