Proceedings of the International scientific and practical conference ―Toronto Congress of Advanced Research‖ (April 20-22, 2026) / Publisher website: www.naukainfo.com. – Toronto, Canada, 2026. - 174 p.

165 characteristics of turbulent flows, the systems of registration, processing and analysis of research results, described in detail in the work [15-17], were used. a b Fig. 1. Experimental stand (a) and relief of the bottom in front of the entrance section of the jet-directing screen (b). The basis of the experimental stand was a hydrodynamic channel, specially designed and manufactured according to the design documentation (Fig. 1). Water flowed through the jet-directing grids to the model of the dam and then to the flexible jet-guiding srreen, which was supported in a vertical position by foam floats and an anchor system fixed to the model of the bottom of the reservoir. The numbers of the structures where the anchors were located near the model of the jet-directing screen, and the velocity field in the near-surface layer flowing around the screen, presented in [9]. During the research, the flow depth over the dam model ( H ) was kept as 0.06 m, and the average flow velocity ( U ) varied from 0.06 m/s to 0.21 m/s, corresponding to Froude numbers / Fr U gH  from 0.08 to 0.27 and Reynolds numbers Re / H UH   from 3600 to 12600, where g is the gravitational constant and  is the kinematic coefficient water viscosity. A flexible screen model, approximately 9 m long and 0.6 m wide, was made from reinforced and rubberized Sealtex 650 fabric with a thickness of approximately 0.7 mm. This fabric, used for heavy-duty vehicle coverings, is manufactured using a