Vortex core behaviour in confined and unconfined geometries: A quasi-one-dimensional model

Darmofal, D. L., Khan, R., Greitzer, E. M., and Tan, C. S., “Vortex core behaviour in confined and unconfined geometries: A quasi-one-dimensional model”, Journal of Fluid Mechanics, vol. 449, 2001, pp. 61–84.