Развитие реакторов на быстрых нейтронах и атомной энергетики является актуальной задачей. Для разработки проектов в области ядерной энергетики необходимо проводить различные теплогидравлические расчеты. Использование результатов расчетов позволит своевременно проводить корректировку в проектировании, что резко повышает ответственность за надежность оборудования реактора.Данная работа посвящена исследованию процессов гидродинамики и теплообмена реактора на быстрых нейтронах электрической мощностью 600 МВт с объемным энерговыделением до 0,494 ГВт/м 3 .В данной работе приводятся результаты расчетов по гидродинамике и теплообмену в сегменте выделенной области ТВС быстрого натриевого реактора. В процессе работы создана 3D-модель выбранной области ТВС. Компьютерное моделирование проводилось в программном комлексе ANSYS FLUENT. Расчеты проводились с использованием турбулентной модели k-ε движения теплоносителя.Показаны неравномерности распределений температур по высоте активной зоны в различных областях ТВС, распределение скорости теплоносителя, а также показатели давления. Анализ полученных результатов показывает, что температуры конструктивных элементов не превышают допустимых температур, перепад давления значительно ниже, чем в реакторах другого типа.Ключевые слова: быстрые реакторы, теплообмен, теплоноситель, температура, тепловыделяющая сборка, перепад давления.The development of reactors on the fast neutrons and nuclear power engineering is generally responsible for its formation. One of them is that the responsibility for the reliability of the reactor equipment, its calculation, creation and operation sharply increases. For the development of projects in the field of nuclear energy, it is necessary to carry out various thermalhydraulic calculations. Using the results of calculations will allow for timely adjustment in the engineering.This work is devoted to the study of the processes of hydrodynamics and heat exchange of reactor on fast neutrons with an electrical power of 600 MW with a volumetric energy release up to 0.494 GW / m3.In the process of work, 3D model of the selected fuel assembly area was created in the program Gambit. Computer modeling was carried out in the ANSYS FLUENT software package as a result of which thermal state of fuel assembly for established mode of heat transfer was defined. The calculations were carried out using the k-ε coolant motion turbulent model. This article presents the results of calculations on hydrodynamics and heat transfer in a segment of the selected fuel assembly of a fast sodium reactor. The non-uniformity of temperature distributions along the height of the active zone in various areas of fuel assemblies, the distribution of the heat carrier velocity, as well as pressure indicators are shown. The analysis of the results obtained shows that the temperatures of the structural elements do not exceed the permissible temperatures; the pressure drop is significantly lower than in reactors of another type.
Abstract. Institution of higher education -is an educational institution, where in addition to training highly qualified personnel in the field, carried out research in various fields of science and technology. The deterioration of the environment, particularly atmospheric pollution of cities by industrial and transport vehicles, aims to detailed study of combustion processes in the industrial sectors. Within the walls of the university, during the educational process and as final papers, students conduct research on the burning processes of various fuels. The obtained results allow determining the optimal parameters of combustion, to offer technological and constructive solutions, which in turn can solve partially or completely the problem of minimizing harmful emissions and efficient combustion of hydrocarbon fuel.
Conducted research of inflammation of the hexadecane depending on the level of pressure in the combustion chamber under given primary conditions. In the process of work, pressure was increased till 200 bars for choosing optimum characteristics of combustion. In the result of work obtained schedules of distribution of the maximum temperature, maximum concentration of the carbon dioxide and water steam, time of inflammation from the pressure in the combustion chamber. Individually provided distribution of the temperature fields at the moment of inflammation and temperature at the moment of active fuel combustion depending on the pressure in the combustion chamber. Based on the obtained results and schedules, chosen optimum pressure equal to 170 bars, when noticed inflammation with the time of delay equal to 0.8 ms, temperature in the combustion chamber is reaching 2697 K, and also discharging relatively low concentration of the carbon dioxide 0.186 g/g.
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