H.Aref, T.A.Dunaeva, V.V.Meleshko
Chaotic advection by two-dimential Stokes flow in a circle

Applied hydromechanics, Vol. 2 (74) ¹ 1, (2000) p.3-9
The Stokes flow due to a rotlet in a circle is determined.The solution shows that for a certain position of the rotlet, the flow has a second stagnation point symmetrically placed inside the circle. Thus, a "blinking rotlet'' model can be constructed in which the rotlet that is "off'' does not disturb the flow. This model seems preferabl to the "blinking vortex'' flow when discussing chaotic advection by a Stokes flow, and is useful for comparisons with experimental and computational investigations of this phenomenon in a cylindrical tank with two rotating cylinders.
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TEXT LANGUAGE: Russian