ИССЛЕДОВАНИЕ НЕЙТРОНИКИ И ТЕПЛОГИДРАВЛИКИ РЕАКТОРА С ВОДОЙ ПОД ДАВЛЕНИЕМ И ТОПЛИВОМ НА ОСНОВЕ ТОРИЯ

В данной работе динамика тепло-гидравлических явлений, а также явлений механики твердого тела была смоделирована методом конечных элементов с использованием Comsol Multiphysics. Для изучения нейтроники был применен OpenMC в приближении стационарной нейтроники. Для оптимизации активной зоны ториевого реактора в качестве охладителя использовалась легкая вода под высоким давлением. В активной зоне располагались 49 топливных стержней, заполненные соединениями тория, организованные в виде регулярной – решеточной геометрии. Моделирование переноса нейтронов методом Монте-Карло в пакете OpenMC позволило получить эффективное значение коэффициента размножения k_eff и пространственное распределение мощности рассматриваемой модели. Были получены детальные теплои гидравлические расчеты – температурный и скоростные профили, в то время как механика твердого тела определила пространственное распределение напряжений и деформаций. Результаты подтвердили применимость и эффективность использования метода совмещения стационарной нейтроники с термогидравликой и структурного анализа для оценки и оптимизации ториевых реакторов с водным охлаждением.

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