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Тема выпускной квалификационной работы: «Определение ÐºÐ°Ð²Ð¸Ñ‚Ð°Ñ†Ð¸Ð¾Ð½Ð½Ñ‹Ñ Ñ Ð°Ñ€Ð°ÐºÑ‚ÐµÑ€Ð¸ÑÑ‚Ð¸Ðº регулирующего клапана ДУ 400 для АЭС».Процесс внедрения оборудования в производство связан с определением границ его применимости. В наши дни эту задачу всё чаще доверяют методам программного моделирования, вместо испытаний на ÑÐºÑÐ¿ÐµÑ€Ð¸Ð¼ÐµÐ½Ñ‚Ð°Ð»ÑŒÐ½Ñ‹Ñ ÑƒÑÑ‚Ð°Ð½Ð¾Ð²ÐºÐ°Ñ .Данная работа посвящена определению кавитационной и Ñ€Ð°ÑÑ Ð¾Ð´Ð½Ð¾Ð¹ Ñ Ð°Ñ€Ð°ÐºÑ‚ÐµÑ€Ð¸ÑÑ‚Ð¸Ðº регулирующего клапана Ду 400 (РК 110.400.00-Э) методом численного моделирования при помощи ПО Ansys Fluent.В работе также приведены аналитические расчёты Ð·Ð°ÑÐ²Ð»ÐµÐ½Ð½Ñ‹Ñ Ñ Ð°Ñ€Ð°ÐºÑ‚ÐµÑ€Ð¸ÑÑ‚Ð¸Ðº и проведено сравнение Ð¸Ñ Ñ€ÐµÐ·ÑƒÐ»ÑŒÑ‚Ð°Ñ‚Ð¾Ð² с результатами, полученными в Ñ Ð¾Ð´Ðµ численного моделирования.По результатам моделирования определен перепад давления, обеспечивающий бескавитационный режим работы клапана, а также предложено решение, направленное на то, чтобы сделать Ñ€Ð°ÑÑ Ð¾Ð´Ð½ÑƒÑŽ Ñ Ð°Ñ€Ð°ÐºÑ‚ÐµÑ€Ð¸ÑÑ‚Ð¸ÐºÑƒ более линейной. Проведен анализ наиболее Ð¿Ð¾Ð´Ð²ÐµÑ€Ð¶ÐµÐ½Ð½Ñ‹Ñ Ñ€Ð°Ð·Ñ€ÑƒÑˆÐ¸Ñ‚ÐµÐ»ÑŒÐ½Ð¾Ð¼Ñƒ воздействию кавитации Ð¿Ð¾Ð²ÐµÑ€Ñ Ð½Ð¾ÑÑ‚ÐµÐ¹., The topic of the final qualifying work: "Determination of cavitation characteris-tics of the control valve DN 400 for nuclear power plants".The process of introducing equipment into production is associated with determining the boundaries of its applicability. Nowadays, this task is increasingly entrusted to the methods of software modeling, instead of testing on experimental devices.This work is devoted to the determination of the cavitation and flow characteristics of the control valve DN 400 (RC 110.400.00-E) by the modeling method using the Ansys Fluent software.The paper presents analytical calculations of the claimed characteristics and compares their results with the results obtained during modeling.Based on the simulation results, the pressure drop was determined, which ensures the cavitation-free operation of the valve, and a solution was proposed aimed at making the flow characteristic more linear. The analysis of the most vulnerable to the destructive effects of cavitation surfaces is carried out.

The structuring processes of ferromagnetic disperse systems in the magnetoliquefied layer affected by the variable inhomogeneous and continuous magnetic fields with mutually perpendicular power lines are studied.

The work is devoted to the analysis of approaches to the description of the flow and power characteristics of the last turbine stages and compartments, which are crucial in assessing the efficiency of the operation of turbine units. Its relevance is due to the necessity to improve calculation methods for cogeneration turbine units since they are still the main source of thermal energy in centralized heat supply systems. The purpose of this article is to evaluate modern approaches to describing the power characteristics of stages and compartments of turbines and to develop alternative ways of presenting them to solve existing problems. This goal was achieved due to the fact that a comprehensive generalization of the experimental data obtained during pilot tests of several types of turbine units was carried out in the form of a generalized nonlinear mathematical dependence that is valid for all the last stages and compartments in the entire range of steam flow rates, up to zero. The most important result and the novelty of this work consisted of consideration a universal form of representation of power characteristics made it possible to integrate them into computer models for calculating turbines, conduct detailed numerical calculations based on them and obtain reliable (accurate to 1-3%) results when calculating y variable modes, including ventilation ones. Significance of the obtained results lies in the fact that they make it possible to find reserves for increasing the efficiency of thermal power plants under variable load schedules due to regime and optimization events.