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Information × Registration Number 0218U002199, 0115U002394 , R & D reports Title Mathematical models, calculation methods and experimental investigations of multiscale mechanical and heat and mass transfer processes in heterogeneous media popup.stage_title Head Kochubey Olexandr Olexijovych, Registration Date 30-01-2018 Organization Oles Honchar Dnipro National University popup.description2 The object of the investigation is multiscale mechanical and thermal processes in heterogeneous media, which, in particular, take place in the blast zone of gas into the working fluid in technological devices. The aim of the investigation is a complex theoretical and experimental study of sophisticated multiscale mechanical, thermal, mass-exchange and other physic-chemical processes in heterogeneous media, the development of a new family of more adequate and accurate mathematical models of such processes and the creation of fundamentally new methods for calculating a broad spectrum of such phenomena in heterogeneous media. The purpose of the experimental work is to establish the dynamic regularities of gas-liquid formations that arise in the gas blown zone into the liquid. Investigation methods and equipment: The theoretical part of the investigation is based on analytical and computational methods of potential theory, as well as the concept of integral homogenization. The experimental part of the research is based on the idea of physical modelling of the process with the following computer processing of the observed video images. The main theoretical results of the study are: a) a new concept of integral homogenization and methods for calculation of multiscale processes in heterogeneous media; b) new mathematical models and new calculation methods for multiphase flow and heat and mass transfer processes in small-scale domains, under microgravity conditions, in a superfluid liquid. The main experimental and practical results: a) new regularities with respect to frequency characteristics in the volume of heterogeneous formations and the probability of the characteristics of splashing of liquid depending on the mode of gas supply; b) new approximate methods and programs for calculating dynamic parameters for specific technological processes, in particular, for the process of desulphurization of iron and steel. All the obtained scientific results are new and correspond to the scientific level of the best modern world achievements, but the concept of integral homogenization and some algorithms of computational potential theory are fundamentally new and do not have world analogues. Field of application of the investigation results: the research results in the field of mathematical and computer modelling, experimental research methods can be used as scientific and technical tools in metallurgy, chemical industry, ecology, missile and space technology, microbiology. Product Description popup.authors Євдокимов Дмитро Васильович Бразалук Юлія Володимирівна Гоман Олег Гаврилович Книш Людмила Іванівна Рузова Тетяна Олександрівна Стояновський Михайло Анатолійович Толстопят Олександр Петрович Флеєр Леонід Олександрович Шульга Роман Олександрович popup.nrat_date 2020-04-02 Close