Fluid flow modeling in annular and semi-annular channels

Results of numerical simulation of flow of viscous incompressible isothermal liquid in annular channel, which represents gap between rotating and fixed cylinders, as well as in semi-annular channel between rotating cylinder and fixed wall, are given. A mathematical model and its implementation for this task in the OpenFOAM package are described. Results are shown for small and large Reynolds numbers, which correspond to the formation of stationary and stochastic flow modes.