Research output: Contribution to journal › Article › peer-review
Calculation of Vibrational Relaxation Times Using a Kinetic Theory Approach. / Oblapenko, G. P.
In: Journal of Physical Chemistry A, Vol. 122, No. 50, 20.12.2018, p. 9615-9625.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Calculation of Vibrational Relaxation Times Using a Kinetic Theory Approach
AU - Oblapenko, G. P.
N1 - Funding Information: This work has been supported by the Russian Foundation of Basic Research, Project No. 18-01-00493. The author would also express his gratitude to Prof. E. V. Kustova of the Saint-Petersburg State University for helpful discussions and advice. Publisher Copyright: © Copyright 2018 American Chemical Society. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2018/12/20
Y1 - 2018/12/20
N2 - In the present work, a method for computation of vibrational relaxation times based on a kinetic theory definition is utilized to calculate vibrational relaxation times of molecules present in air (N 2 , O 2 , and NO) in collisions with air species particles. An overview of available experiment VT relaxation time measurements, as well as quasi-classical trajectory (QCT) calculation results, and various empirical models, is given. Different inelastic cross-section models are used for the computation of the relaxation times, and their parameters are adjusted to fit the available experimental data and QCT results. It is shown that the proposed method of calculation can give a quantitative and qualitative agreement with the available data in a wide range of temperatures; the obtained interaction parameters may be used not only for vibrational relaxation time calculation within a multitemperature framework but also for development of state-specific models for use in CFD and DSMC codes.
AB - In the present work, a method for computation of vibrational relaxation times based on a kinetic theory definition is utilized to calculate vibrational relaxation times of molecules present in air (N 2 , O 2 , and NO) in collisions with air species particles. An overview of available experiment VT relaxation time measurements, as well as quasi-classical trajectory (QCT) calculation results, and various empirical models, is given. Different inelastic cross-section models are used for the computation of the relaxation times, and their parameters are adjusted to fit the available experimental data and QCT results. It is shown that the proposed method of calculation can give a quantitative and qualitative agreement with the available data in a wide range of temperatures; the obtained interaction parameters may be used not only for vibrational relaxation time calculation within a multitemperature framework but also for development of state-specific models for use in CFD and DSMC codes.
UR - http://www.scopus.com/inward/record.url?scp=85058500421&partnerID=8YFLogxK
U2 - 10.1021/acs.jpca.8b09897
DO - 10.1021/acs.jpca.8b09897
M3 - Article
C2 - 30482021
AN - SCOPUS:85058500421
VL - 122
SP - 9615
EP - 9625
JO - Journal of Physical Chemistry B
JF - Journal of Physical Chemistry B
SN - 1520-6106
IS - 50
ER -
ID: 39807495