title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ Ð¿ÐµÑÐµÐ¼ÐµÑÐ¸Ð²Ð°ÑÑÐ¸Ñ ÑÐµÑÐµÑÐ¾Ðº Ð½Ð° ÑÐµÐ¿Ð»Ð¾Ð³Ð¸Ð´ÑÐ°Ð²Ð»Ð¸ÑÐµÑÐºÐ¸Ðµ Ñ Ð°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ¸ Ð°ÐºÑÐ¸Ð²Ð½Ð¾Ð¹ Ð·Ð¾Ð½Ñ Ð² ÑÐµÐ°ÐºÑÐ¾ÑÐµ ÐÐÐ­Ð -1000 ÑÑÐµÑÑÐµÐ³Ð¾ ÑÐ½ÐµÑÐ³Ð¾Ð±Ð»Ð¾ÐºÐ° ÐÐ°Ð»Ð¸Ð½Ð¸Ð½ÑÐºÐ¾Ð¹ ÐÐ­Ð¡
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸ÑÑÐ°
titleType: Subtitle
title: Investigation of the effect of mixing grids on the thermal-hydraulic characteristics of the core in the VVER-1000 reactor of the 3rd power unit of the KNPP
Creators: name: ÐÐ»Ð¸ÑÐºÐ°, ÐÐ½Ð°ÑÑÐ°ÑÐ¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: ÐÑÐ¾Ð¼Ð½ÑÐµ ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÑÐ°Ð½ÑÐ¸Ð¸
Ð¯Ð´ÐµÑÐ½ÑÐµ ÑÐµÐ°ÐºÑÐ¾ÑÑ
Ð¿ÐµÑÐµÐ¼ÐµÑÐ¸Ð²Ð°ÑÑÐ¸Ðµ ÑÐµÑÐµÑÐºÐ¸
ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÐ½ÑÐµ Ð¿ÐµÑÐµÐ¿Ð°Ð´Ñ
Ð¿Ð¾ÑÐµÑÐ¸ Ð´Ð°Ð²Ð»ÐµÐ½Ð¸Ñ
Ð¸Ð·Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ ÑÐ°ÑÑ Ð¾Ð´Ð°
mixing grids
temperature differences
pressure loss
flow changes

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description: The subject of the graduate qualification work is: "Investigation of the effect of mixing grids on the thermal-hydraulic characteristics of the core in the VVER-1000 reactor of the 3rd power unit of the KNPP". This work is devoted to the study of mixing grids (MG) and the determination of their influence on the temperature difference and coolant flow through the core.Â The purpose of the graduate work is to develop a methodology for determining the dependence of temperature differences on the uneven energy release, comparing the results with the difference in the most energy-intensive fuel element, calculated by the formulas. Development of a calculation algorithm for obtaining the flow, determining it using the flow-pressure characteristic, as well as the theoretical method using calculation formulas. A significant part of the material was obtained at the KNPP. The data were taken from the ICIS, the work was carried out in the KASKAD, STRELA software package and the reactor simulator (RS). Manual calculations and analysis of the obtained data were carried out. Based on all the calculations and studies, it can be concluded that it was not possible to establish the effectiveness of the MG, which negatively affects the temperature difference and consumption, using the proposed methods. The results of this experiment are important for the KNPP since the main priority of its operation is safety. Knowledge of the efficiency of the grids may be required to improve the operation of stations in the future.