ISSN 0869-6632 (Print)
ISSN 2542-1905 (Online)

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Dudchenko O. A., Guria G. T. Numerical study of flows past a pair of partially shrouded rotating cylinders. Izvestiya VUZ. Applied Nonlinear Dynamics, 2010, vol. 18, iss. 4, pp. 44-53. DOI: 10.18500/0869-6632-2010-18-4-44-53

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Numerical study of flows past a pair of partially shrouded rotating cylinders

Dudchenko Olga Aleksandrovna, Moscow Institute of Physics and Technology

A symmetrical two­dimensional flow past two rotating circular cylinders in a side­by­side arrangement is numerically investigated. Each cylinder is partially covered with an impermeable shroud in such a way that the unshielded moving section faces the incident flow. The effect of flow speed and tangential speed of the cylinder surface on flow topology is investigated for Reynolds numbers from 0 to 100. The formation of stationary eddies – «turrons» – in front of the gap between the cylinders is shown for a wide range of governing parameters. These secondary motions are shown to diminish at higher Reynolds numbers. Drag forces on the cylinders are quantified for flow patterns under consideration. Similarities between flow patterns near the cylinders and those observed in some peristaltic pumping regimes are discussed.

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