Improvement of the Landau-Teller model for CO2 on the basis of the Chapman–Enskog method

Результат исследований: Публикации в книгах, отчётах, сборниках, трудах конференцийстатья в сборнике материалов конференциинаучнаярецензирование

1 Цитирования (Scopus)

Аннотация

Vibrational relaxation of carbon dioxide in the three-temperature kinetic-theory
approach is studied. The focus is on the evaluation of the vibrational energy production terms in the coupled symmetric-bending and asymmetric modes. Using the generalized Chapman–Enskog method, the energy production terms are expressed as functions of the gas temperature, vibrational temperatures of CO2 modes and probabilities of corresponding transitions. It is shown that a modification of the Landau–Teller formula can be obtained from the rigorous theoretical expressions using several limiting assumptions. Whereas VT relaxation in the bending mode can be described by the Landau–Teller approximation with a satisfactory accuracy, its application to the inter-mode exchange requires introducing relaxation times depending on the vibrational temperatures of the modes involved to the transitions.
Язык оригиналаанглийский
Название основной публикацииIOP Conference Series: Materials Science and Engineering
Подзаголовок основной публикацииXIII International Conference on Applied Mathematics and Mechanics in the Aerospace Industry (AMMAI'2020) 6-13 September 2020, Alushta, Russia
ИздательIOP Publishing Ltd.
Том297
ISBN (электронное издание)1757-899X
DOI
СостояниеОпубликовано - 2020

Предметные области Scopus

  • Физика и астрономия (все)

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