Subotovich V. Complex theoretical and experimental problems' solution for aerodynamics of the flowing turbine path.

Object of research - the aerodynamic processes in the flowing parts of steam and gas turbines. The purpose of the study, the combination of development of the complex of perspective theoretical methods, which are equally successful in solving the direct and inverse problems of aerodynamics of flowing parts of turbines and reasonable concepts of experimental research, to enable the laboratory to give a reliable estimate of the adopted technical solutions. Methods of the research results of the thesis are based on data from the classical to the aerodynamic experiment, which is held by the standard technique. Theoretical and practical results. Theoretical statements are based on the fundamentals of gas dynamics, the theory of turbomachines and numerical mathematical methods. The practical significance of the results is the development of the design principles of nozzle grids for modeling the relative motion of the uneven flow before impeller air turbine and development of a forecasting method of gas-dynamic characteristics of a powerful, high-temperature and high-speed turbine on the basis of laboratory of "cold" experimental aerodynamic researches. Novelty - for the first time from a unified methodological positions proposed methods for solving direct and inverse aerodynamic problems for cascades, ring turbine cascades and free ring canals that in contrast to the existing approaches provides the same accuracy of solutions of both problems; the method of analysis ring cascades together with adjustable radial diffuser device, which applied the basic principles of the work of the axial supersonic wind tunnel; developed a method of forecasting of the characteristics of a powerful, high-temperature and high-speed single-stage turbine in a wide range of modes of its work, based on the results of laboratory of experimental research on cold air turbines at low levels of expansion and frequencies of rotation of a rotor, its individual nozzle cascades, and rotor with a special helper nozzle blades. The degree of implementation : results of studies used in the analysis of work and improvement of elements in flowing parts of turbines in the scientific and technical cooperation of the Department of turbine NTU "KHPI" with the SAMSUNG TECHWIN and with enterprise OJSC "TURBOATOM", and also in the educational process of the Department of turbine NTU "KHPI". Scope of application - engineering.