Avdieieva O. The object-oriented complex optimization of flow path of powerful steam turbines

Research object: thermogasdynamic processes in flow paths of steam turbine. The purpose of research is development of object-oriented methodology for complex optimization of the flow path of powerful steam turbines and implementation on its basis of the special software. Research methods: theoretical aspects of the dissertation are based on the fundamental bases of the theory of gas dynamics, thermodynamics and the theory of CAD systems. Decomposition of the general optimization task is implemented in accordance with the structural hierarchy of turbine. For definition of influence of flow path geometry on its performance data the methods of mathematical modeling of a stream in the turbine are used. Theoretical and practical results: the methodology of object-oriented complex optimization of the flow path of powerful steam turbines, the use of which can significantly improve the performance of new turbine units, as well as to upgrade existing ones. Novelty: the methodology for object-oriented complex optimization of the flow path of powerful steam turbines, taking into account the structural, technological and functional limitations is first developed; the technique of determining pressure losses in the regulating chamber with respect to operational and design parameters are first developed; the problem of complex optimization of the flow path of the steam turbine is solved and there is obtained a new data on the mutual influence of turbine components at its optimal performance, which allows to identify and evaluate the qualitative and quantitative indicators. Extent of introduction: Turbine Projection Chair of NTU "KHPI", "Turboatom" PJSC, Kharkov. Sphere of the use: turbine construction area.