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Решение граничной задачи нестационарного уравнения переноса излучения и частиц для полубесконечной среды «Светотехника», 2022, № 3

Журнал «Светотехника» №3

Дата публикации 27/06/2022
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Решение граничной задачи нестационарного уравнения переноса излучения и частиц для полубесконечной среды «Светотехника», 2022, № 3
Авторы статьи:
Лубенченко Александр Владимирович, Лубенченко Ольга Игоревна

Лубенченко Александр Владимирович, доктор техн. наук, профессор. Окончил Московский энергетический институт в 1992 г. Профессор кафедры «Общая физика и ядерный синтез» НИУ «МЭИ»

Лубенченко Ольга Игоревна. Окончила Московский педагогический государственный университет в 1997 г. Старший преподаватель кафедры «Физика» им. В.А. Фабриканта НИУ «МЭИ»

Аннотация
Рассмотрена граничная задача нестационарного уравнения переноса излучения и частиц для полубесконечной среды с произвольной индикатрисой однократного рассеяния. Эта задача сводится к нахождению функции распределения по длинам пробега частиц в мутной среде. Методом инвариантного погружения найдено нелинейное интегро-дифференциальное уравнение для функции распределения по длинам пробега частиц в случае нестационарного многократного рассеяния в полубесконечной среде с анизотропным законом рассеяния. С помощью метода дискретных ординат получены матричные нелинейные дифференциальные уравнения, которые решены с использованием формул обратного дифференцирования и матричных методов решения уравнения Ляпунова. Результаты расчёта апробированы методом Монте-Карло для функции распределения по длинам пробега фотонов, отражённых от капельного облака WC1, и упругорассеянных электронов, отражённых от твёрдой полубесконечной мишени.
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