Calculation of Radiation Characteristics of Shock-Heated Air by the Direct Simulation Monte Carlo Method

IF 1.4 4区化学 Q4 PHYSICS, ATOMIC, MOLECULAR & CHEMICAL

Russian Journal of Physical Chemistry B Pub Date : 2024-09-11 DOI:10.1134/S1990793124700398

A. L. Kusov, N. G. Bykova, G. Ya. Gerasimov, P. V. Kozlov, I. E. Zabelinsky, V. Yu. Levashov

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Abstract

The results of modeling the radiation characteristics of the air behind the front of a strong shock wave, performed using the direct simulation Monte Carlo method, are presented. The model used takes into account various physical and chemical processes occurring in shock-heated air, including the translational-rotational and translational-vibrational energy exchange, kinetics of chemical reactions, and excitation of electronic levels of atoms and molecules, as well as the emission and absorption processes for a discrete spectrum. As a result of the calculations, time-integrated spectrograms of the volumetric radiation power of shock-heated air are obtained in absolute units in the range of shock wave velocities from 7.4 to 10.7 km/s at a gas pressure in front of the shock wave front of 0.25 Torr. The calculation data are compared with the experimental data obtained on a DDST-M double-diaphragm shock tube of the Institute of Mechanics of Moscow State University.

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用直接模拟蒙特卡洛法计算冲击加热空气的辐射特性

摘要介绍了使用直接模拟蒙特卡罗方法对强冲击波前端后方空气的辐射特性进行建模的结果。所使用的模型考虑了冲击波加热空气中发生的各种物理和化学过程，包括平移-旋转和平移-振动能量交换、化学反应动力学、原子和分子电子水平的激发，以及离散光谱的发射和吸收过程。计算的结果是，在冲击波速度为 7.4 至 10.7 千米/秒的范围内，冲击波前方的气体压力为 0.25 托时，冲击加热空气的体积辐射功率的时间积分光谱图（绝对单位）。计算数据与在莫斯科国立大学力学研究所的 DDST-M 双隔膜冲击管上获得的实验数据进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Russian Journal of Physical Chemistry B 化学-物理：原子、分子和化学物理

CiteScore

2.20

自引率

71.40%

发文量

106

审稿时长

4-8 weeks

期刊介绍： Russian Journal of Physical Chemistry B: Focus on Physics is a journal that publishes studies in the following areas: elementary physical and chemical processes; structure of chemical compounds, reactivity, effect of external field and environment on chemical transformations; molecular dynamics and molecular organization; dynamics and kinetics of photoand radiation-induced processes; mechanism of chemical reactions in gas and condensed phases and at interfaces; chain and thermal processes of ignition, combustion and detonation in gases, two-phase and condensed systems; shock waves; new physical methods of examining chemical reactions; and biological processes in chemical physics.