HYDRODYNAMICS OF THE CYLINDER ROTATING IN THE UNBOUNDED VISCOUS MEDIUM

Bulanov Ed.A., Doctor of Technical Sciences; A.N. Kosygin Moscow State Textile University; Moscow, Russia

It is shown, that at first a laminar flow around rotating cylinder with growth of Reynolds number passes into a pseudo-laminar flow, and then into a steady turbulent flow. The equations of averaged velocity, fluctuating parts of the velocity, turbulent friction for pseudo-laminar flow is obtained on the basis of Reynolds equations determination, for steady turbulent flow from scheme of Boussinesq-Prandtl turbulent exchange, which is carried out as a result of volume element rotating. The comparison of calculation results of resistance coefficient with experimental data of Theodorsen and Regier is depicted.

Laminar flow, turbulent flow, resistance coefficient, rotating cylinder

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