Non-stationary viscosimetric circular flows of viscoplastic medium in an annular gap / L. V. Muravleva, E. A. Muravleva. //Vestnik Moskovskogo Universiteta. Seriya 1. Matematika. Mekhanika. 2012. ? 5. P. 54-57 [Moscow Univ. Math. Bulletin. Vol. 67, N 5, 2012.].

The analytical estimates for the start-up and cessation of a circular flow of a viscoplastic medium in an annular gap are proposed and are numerically verified.

Key words: viscoplasticity, unsteady viscometric flows, variational inequalities, Couette flow.