Author: Rahimov, Ashraf Rasul o‘g‘li; Murodullayev, Javoxir Raxmatillo o‘g‘li

Annotation: The paper proposes an improved method for studying the kinematic structure of open-channel flow - the spatial distribution of velocities, secondary (circulation) currents and turbulent pulsations. The method combines high-resolution instrumental measurements (Acoustic Doppler Current Profiler, ADCP) with two- and three-dimensional numerical hydrodynamic modelling, and introduces correction coefficients for local conditions (high turbidity). The application is demonstrated on a bend section of the Karshi Main Canal; the relationships between velocity profiles, bank erosion and sediment deposition are analysed. Compared with conventional point measurements, the approach improves the accuracy of predicting channel processes.

Keywords: water flow, kinematic structure, velocity field, secondary current, turbulence, channel deformation, sediment, main canal, ADCP, numerical modelling.

Pages in journal: 513 - 518