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.

161 POWER ENGINEERING AND POWER MACHINE ENGINEERING UDC 621.039.534:536.24 Volodymyr Voskoboinick Dr Sci., Associate Professor Oleksandr Voskoboinyk PhD, Senior Research Fellow Andrii Voskobiinyk PhD, Associate Professor Institute of Hydromechanics NAS Ukraine Kyiv, Ukraine IMPROVING COOLING OF NUCLEAR POWER PLANT REACTORS WITH A FLEXIBLE JET-DIRECTING SCREEN Abstract. The results of identifying the features of formation and kinematic characteristics of jet and vortex flows near the flexible screen web of a model of a jet- directing structure for improving the cooling conditions of nuclear power plant reactors are presented. The generation and formation of vortex and jet flows near a jet-directing screen are described using visual and instrumental researches. The hydrodynamic characteristics of the velocity field and direction of fluid movement within the jet-directing structure in a cooling pond are determined. Keywords: reactor cooling, jet-directing screen, velocity field, visual researches, circulation flow.