Basic models and approximation for the engineering description of the kinetics of the oxide layer of steel in a flow of heavy liquid metal coolant under various oxygen conditions

Авдеенков, А. В.; Achakovsky, Oleg I.; Ketlerov, Vladimir V.; Kumaev, V.Ya.; Orlov, A. I.

doi:10.3897/nucet.6.59068

Cited by 6 publications

(2 citation statements)

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“…Для описания процессов образования, трансформации и переноса примесей в первом контуре реактора с ТЖМТ использована система трехмерных уравнений несжимаемой многокомпонентной среды в декартовой системе координат. Система включает в себя уравнения гидродинамики в приближении Буссинеска, уравнения сохранения и переноса тепловой энергии, уравнения физико-химической кинетики примесей [1], уравнения сохранения и переноса компонентов многокомпонентной среды. Решение системы уравнений осуществляется конечно-разностными методами.…”

Section: расчетные оценки выхода железа в теплоносительunclassified

“…В данной работе рассматривается только задача тестовой оценки выхода железа в теплоноситель. Более детальное и полное описание использованных моделей и приближений можно найти в [1].…”

Section: расчетные оценки выхода железа в теплоносительunclassified

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Numerical and Analytical Study of the Formation and Accumulation of Deposits on the Circuit With HLMC Within the Consistent Model for Physical and Chemical Processes

Авдеенков

Achakovskiy

2021

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants

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An engineering model has been analyzed for a self-consistent calculation of the growth of an oxide film in circulation circuits with a heavy liquid metal coolant and concentrations of impurities (oxygen, iron, and magnetite) from the point of view of a possible uncertainty in determining the oxygen activity. The modeling of thermohydraulic and physicochemical processes is based on solving the associated three-dimensional equations of hydrodynamics, heat transfer, convective-diffusive transport, and the formation of chemically interacting impurity components in the coolant volume and on the surface of steels. The yield of iron and the formation of magnetite are due precisely to the specifics of self-consistent physicochemical processes in the oxide film and at the interface. There have been conducted model calculations of the influence of the uncertainty of oxygen activity on the speed and the integral yield of iron, which under the given conditions of the oxygen regime after an interaction with oxygen causes the appearance of magnetite. It has been numerically demonstrated that in the saturation mode there is a model-independent characteristic, which is determined by the parabolic constant and thickness of the oxide film characteristic of steel.

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Section: расчетные оценки выхода железа в теплоносительunclassified