Calculation of Distribution Dynamics of Inhomogeneous Temperature Field in Range of Fuel Elements by Using FreeFem++

[摘要] This article introduces the result of studying the heat exchange in the fuel element of the nuclear reactor fuel magazine. Fuel assemblies are completed as a bundle of cylindrical fuel elements located at the tops of a regular triangle. Uneven distribution of fuel rods in a nuclear reactor's core forms the inhomogeneity of temperature fields. This article describes the developed method for heat exchange calculation with the account for impact of an inhomogeneous temperature field on the thermal-physical properties of materials and unsteady effects. The acquired calculation results are used for evaluating the tolerable temperature levels in protective case materials.

[发布机构] Department of Mechanics and Mathematical Modeling, Far Eastern Federal University, Sukhanova St., 8, Vladivostok; 690090, Russia^1;Institute of Applied Math, Far Eastern Department of RAS, 7 Radio St., Vladivostok; 690041, Russia^2

[学科分类] 土木及结构工程学

[关键词] Calculation results;Fuel assembly;Heat exchange calculation;Inhomogeneities;Inhomogeneous temperature field;Temperature level;Thermal-physical property;Unsteady effects