NUMERICAL SIMULATION OF THE PROBLEM OF TURBULENT FLUID FLOW ON A CYLINDRICAL ROUNDING OF AN OPEN CHANNEL
The article deals with a three-dimensional turbulent model of the flow of a viscous liquid in an open cylindrically rounded channel of rectangular cross-section. On the walls and near the walls of the channel are placed conditions: adhesion; laminar and turbulent layers; in the longitudinal axis of the flow - the condition of periodicity; on a free surface - zero tangential voltage. To solve the problem, a cosine-shaped spectral function by vertical coordinate and a predictor-corrector scheme of the method of fractional steps by horizontal coordinates are used. For isoperimetric data, the corrector circuit uses the Bunemann algorithm.