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Information × Registration Number 0217U003657, 0111U008138 , R & D reports Title The effect of non-steady conditions on multiphase systems and diffusion in them. Semiclassical theory of vibration-rotation molecular spectra popup.stage_title Head Nesterenko Aleksandr Ivanovich, Registration Date 15-06-2017 Organization State higher educational entity "Ukrainian State University of Chemical Technology" popup.description2 Object of research - rotation spectra of molecules with octahedral symmetry; hydrocarbons cracking under cavitation; protective coatings in carbonaceous steels; multilayered (compound) bodies at extreme influences; transport phenomena in water-bearing layers; pulp moving in polyethylene pipes. The aim of the study - is to develop a mechanism of changes in the structure and composition of phases in multi-phase systems under non-stationary conditions; development of the quasiclassical theory of vibrational-rotational spectra of molecules. Research methods - mathematical methods of theoretical physics; the approximate analytical methods of operational calculation, a method of power series, and also numerical methods; mathematical modelling. From the new point of view semiclassical rules of quantization taking into account quantum corrections and nonadiabaticity of Berry phase for rotation energy of molecules with octahedral symmetry are received. It is found that the distribution of static liquid pressure in a centrifugal vortex chamber has a complex character: the cavitation area is a hollow truncated cone, inside which is a cylindrical steam vortex. It is concluded that the cavitation region must exist at the surface of the vortex, where is the intensification of the cracking of hydrocarbons. Dependences of changing concentration of carbon are received at various rates of formation of a protective coating. The mathematical model of calculation of temperature fields of a multilayer design is developed at extreme thermal influences. The problem of non-stationary heat conductivity is solved at extreme influences. A numerical model of filtration and heat transfer in the aquifer that is used as seasonal storage of thermal energy. Effective methods of calculation of parameters of hydrotransport in polyethylene pipes are developed. Field of investigation - M 72.1 Research and experimental development on natural sciences and engineering. Product Description popup.authors Бурліков Вячеслав Валерьєвич Карпова Людмила Михалівна Нестеренко Микола Григорович Нестеренко Олександр Іванович Селезньова Надія Вікторівна Скалозуб Олександр Сергійович Татарко Лариса Гаврилівна Тиха Людмила Станіславівна Якубовська Зінаїда Миколаївна popup.nrat_date 2020-04-02 Close