态-态模型下的O<sub>2</sub>/O系统热化学非平衡与辐射过程

郑伟杰; 曾明; 王东方; 谢易

doi:10.7638/kqdlxxb-2019.0087

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态-态模型下的O₂/O系统热化学非平衡与辐射过程

研究论文 | 更新时间：2026-05-28

- 态-态模型下的O₂/O系统热化学非平衡与辐射过程
- Numerical study of thermo-chemical nonequilibrium and radiation process for O₂/O system with state-to-state approach
- 空气动力学学报 2020年38卷第3期页码：448-460
- 作者机构：
  
  国防科技大学空天科学学院,长沙,410073
- 作者简介：
  
  郑伟杰(1994-), 男, 福建厦门人, 硕士生, 研究方向:高超声速与高温气体动力学.E-mail:xmsbzwj@126.com
  曾明(1971-), 女, 湖南娄底人, 教授, 研究方向:高超声速与高温气体动力学.E-mail:ming_z@163.com
- 基金信息：
  
  国家自然科学基金（11572348，11927803）
- DOI：10.7638/kqdlxxb-2019.0087
  中图分类号： V211.22
- 纸质出版：2020
- 稿件说明：
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郑伟杰, 曾明, 王东方, 谢易. 态-态模型下的O₂/O系统热化学非平衡与辐射过程[J]. 空气动力学学报, 2020, 38(3): 448-460. DOI: 10.7638/kqdlxxb-2019.0087.

ZHENG Weijie, ZENG Ming, WANG Dongfang, et al. Numerical study of thermo-chemical nonequilibrium and radiation process for O₂/O system with state-to-state approach[J]. 2020, 38(3): 448-460. DOI: 10.7638/kqdlxxb-2019.0087.
郑伟杰, 曾明, 王东方, 谢易. 态-态模型下的O₂/O系统热化学非平衡与辐射过程[J]. 空气动力学学报, 2020, 38(3): 448-460. DOI: 10.7638/kqdlxxb-2019.0087. DOI：

ZHENG Weijie, ZENG Ming, WANG Dongfang, et al. Numerical study of thermo-chemical nonequilibrium and radiation process for O₂/O system with state-to-state approach[J]. 2020, 38(3): 448-460. DOI: 10.7638/kqdlxxb-2019.0087. DOI：

摘要

采用态-态模型，研究包含振动能级跃迁、化学反应和辐射跃迁的O

/O系统的非平衡过渡过程。对静止的O

/O气体系统，设定不同的初始条件，突然降温或升温至3000 K、10 000 K、20 000 K后保持等温等容，数值模拟组元质量分数、振动能级分布和辐射特性随时间的演化过程，分析不同条件下各类过程趋近平衡的松弛时间、稳态平衡结果等特征，以及辐射和热化学非平衡过程的相互影响特点。结果表明，态-态模型得到的振动温度趋近平衡值的特点与双温度模型所描述的不同，有时振动温度随时间甚至出现非单调变化的现象，非平衡过渡过程中的振动能级分布也不满足振动温度下的玻尔兹曼分布。本文算例显示出O

/O系统在高温条件下的非平衡辐射特征，不过辐射跃迁对热化学非平衡过程的影响不明显，非平衡辐射的特征时间达到振动松弛时间的10倍以上。

Abstract

The state-to-state approach

which includes the transitions between vibrational energy levels

state specific chemical reactions

and radiative transitions

is used to study the nonequilibrium process of O

/O mixture system. The time evolution of the density of O and O

at specific energy levels as well as the radiative band intensities are numerically simulated for a stationary closed O

/O mixture system with different initial conditions at constant governing temperature and volume. The transient properties such as the relaxation

time and the equilibrium steady state values of the nonequilibrium processes are analyzed

and the interactions between the vibrational transitions

chemical reactions

and the radiative transitions are discussed. The results show that

the time evolution of the vibrational temperature does not follow the exponential approaching behavior described by the two-temperature model

the vibrational temperature even show non-monotonous variation with time

and the population distributions of the vibrational energy levels also depart from the Boltzmann distribution under the vibrational temperatures. The radiation properties show strong nonequilibrium feature in the transient process for the cases at high temperature

however

the effects of the radiation on the thermo-chemical processes are not evident

and the characteristic time of nonequilibrium radiation is one order of magnitude higher than the vibrational relaxation time.

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Keywords

references

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态-态模型下的O2/O系统热化学非平衡与辐射过程

Numerical study of thermo-chemical nonequilibrium and radiation process for O2/O system with state-to-state approach

DOI：10.7638/kqdlxxb-2019.0087

摘要

Abstract

关键词

Keywords

references

态-态模型下的O₂/O系统热化学非平衡与辐射过程

Numerical study of thermo-chemical nonequilibrium and radiation process for O₂/O system with state-to-state approach