Моделирование теплопроводности разреженного газа в наноканалах
https://doi.org/10.17586/2220-8054-2023-14-2-186-194
Аннотация
В работе исследована теплопроводность разреженных газов в наноканалах и в свободной среде. Рассматриваются следующие газы Ar, Kr, Ne, Xe, O2, CH4. Эволюция молекул газа в фазовом пространстве рассчитывается методом стохастического молекулярного моделирования. Установлено, что коэффициент теплопроводности газа в наноканале анизотропен. Анизотропия теплопроводности обусловлена взаимодействием молекул газа со стенками канала. Это взаимодействие описывается зеркальным или диффузным законами отражения молекул. Теплопроводность газов поперек канала значительно ниже, чем вдоль него. Анизотропия теплопроводности сохраняется даже в микроканалах, но уменьшается с увеличением плотности газа. На самом деле коэффициент теплопроводности является свойством не только газа, но и системы газ+стенка канала.
Об авторах
В. Я. Рудяк
Kutateladze Institute of Thermophysics of Siberian Branch of RAS; Novosibirsk State University of Architecture and Civil Engineering
Россия
Россия
Е. В. Лежнев
Novosibirsk State University of Architecture and Civil Engineering
Россия
Россия
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Рецензия
Для цитирования:
Рудяк В.Я., Лежнев Е.В. Моделирование теплопроводности разреженного газа в наноканалах. Наносистемы: физика, химия, математика. 2023;14(2):186-194. https://doi.org/10.17586/2220-8054-2023-14-2-186-194
For citation:
Rudyak V.Ya., Lezhnev E.V. Modeling the rarefied gas thermal conductivity in nanochannels. Nanosystems: Physics, Chemistry, Mathematics. 2023;14(2):186-194. https://doi.org/10.17586/2220-8054-2023-14-2-186-194
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