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.

166 cast polyester technology. The upper part of the screen fabric, which was attached to the pontoons, was folded over and glued for added strength. Grommets were installed in the lower part of the screen fabric, through which it was secured to the concrete bottom of the hydrodynamic channel. When installing the flexible screen, the foam floats to which the screen fabric was attached were secured to rails mounted under a level, above the channel bottom at a height corresponding to the simulated depth of the cooling reservoir, as per the provided drawings (Fig. 1a). The lower part of the fabric was then secured to the concrete channel bottom, and the channel bottom was concreted behind the secured screen, taking into account its profile. After this, model anchor chains were attached to the concrete channel bottom and to the side walls of the floats. These models were made of thin, low-stretch (0.2 mm diameter) steel fishing wire, which was tensioned uniformly to the anchor brackets to produce a consistent tone, similar to tuning guitar strings. As a result, the flexible screen was installed over the relief bottom of the channel in compliance with the specified geometry (Fig. 1b) and the floats supporting it were at a fixed depth, and the anchor chain models were evenly tensioned. During visualization, colored inks and dyes were used as contrast agents, along with floats, foam balls, wood shavings, and suspended particles approximately 1 mm in diameter with neutral or near-neutral buoyancy. Colored inks or dyes were injected into the flow through miniature tubes secured in the holders of the coordinate devices. The dye flow rate was adjusted depending on the incoming flow velocity, and the coordinate devices allowed the dye stream to be positioned where the flow needed to be visualized. Additionally, for efficiency, dyes contained in polyethylene bottles were manually injected into the areas of interest through long, thin-walled tubes, creating a cloud of colored liquid. The use of multicolored dyes made it possible to identify the characteristic locations of the formation and development of vortex structures and jet flows that arose during flow around both the flexible screen and the near-surface and near-bottom surfaces near it. The use of small floating contrast bodies, as well as floats moving on the surface and in the near-surface layer of the flow, made it possible to determine the direction