Krupa E. Improving energy performance of hydraulic units by improving the workflow of new types of hydraulic turbines

Object of research is a working process horizontal hydraulic capsule and radial-axial turbines. The purpose of this study is to improve the performance of vertical and radial-axial hydraulic turbines, by improving workflow and analysis of the vortex structure of the flow in the setting parts of new types of turbines. Methods of research - applied the methods of mathematical simulation of the turbine, the methods for direct and inverse problem of the flow cascades of profiles, methods of numerical simulation on a PC. Theoretical and practical results - scientifically-based proposals on the nomenclature and profiled blade system dual capsule hydro, which will continue to apply these hydro unit for heads 40-260 m. The results of analysis of the vortex structure of the flow in the flow of high-pressure turbines parts make it possible to significantly increase the level of design flow parts of hydraulic turbines. Novelty - based on a study of the workflow dual hydraulic ram, the first time the design procedure of the combinatorial relationship between the diffuser and two bladed impeller systems. Developed a science-based methodology to forecast the universal characteristics of hydraulic turbines with multiple-row blade systems. The analysis of the vortex flow patterns and causes of losses in the supply organs and propeller turbines, the use of which would more appropriately define the structure of the mean flow in the inlet section as boundary conditions in computer mathematical simulation of the flow structure and the calculation for the developed runners. The degree of implementation - Department of of Hydraulic Machines NTU "KhPI", "Turboatom" (Kharkiv). Scope - power engineering