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Information × Registration Number 0221U107240, 0120U102004 , R & D reports Title Analysis of the influence of hydrodynamic forces acting in narrow clearances of seals and bearings on increasing energy efficiency and reducing the harmful emissions and vibrations of centrifugal machines. popup.stage_title Head Zahorulko Andrii V., Кандидат технічних наук Registration Date 30-12-2021 Organization Sumy State University popup.description2  Due to the significant increase in operating pressures and rotational speeds of the centrifugal machine rotors, the complexity of the sealing problem and improving of the annular seals and bearings rotordynamic characteristics increases. In such conditions, the hydrodynamic forces arising in narrow clearances are very important, which can be both stabilizing and destabilizing. Thus, the development of methods for analyzing the force characteristics of multi-annular seals-bearings, rolling bearings, combined hydrostatodynamic bearings and methods for improving the tribological characteristics of plain bearings and seals is of great scientific interest and important scientific and practical importance for new knowledge in such fields as industry engineering, aviation and space technology, energy and transport. The following problems are solved in this work: numerical solution of the hydrodynamic lubrication of ball bearings problem, which are lubricated with pumped liquid (liquid nitrogen); numerical analysis of bearing capacity of combined hydrostatodynamic bearings of turbomachines; experimental studies of static and dynamic characteristics, analytical and numerical determination of dynamic stiffness coefficients and damping of two- and three-annular seals-bearings; development of methods and research to improve the protective and tribological characteristics of the surfaces of the friction pairs of bearings and seals Product Description popup.authors Izemenko Vladyslav V Borsuk Serhii A Gaponova Oksana P. Hudkov Serhii M Mishchenko Svitlana O Pozovnyi Oleksandr O. Sapozhnykov Yaroslav I Taran Ivan V Tarelnyk Viacheslav B popup.nrat_date 2022-03-09 Close