在冲击加热空气的振动激发上. 一,CO/O2/Ar混合物
Dong He1,2, Xinkai Wei1,2, Qizhen Hong2
1Deep Space Exploration Laboratory/State Key Laboratory of High Temperature Gas Dynamics/Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, People's Republic of China.
这项研究测量了冲击加热空气中的CO振动温度,以分析CO和O2之间的能量转移. 开发了一种新的振动-振动能量传输模型,比SSH公式提高了精度.
科学领域:
- 化学动力学和热力学.
- 高温气体动力学 高温气体动力学
- 频谱学是一种光谱学.
背景情况:
- 了解高温气体混合物中的振动能量转移对于燃烧和航空航天应用至关重要.
- 现有的模型,如施瓦茨-斯拉夫斯基-赫兹菲尔德 (SSH) 公式,可能无法准确地捕捉CO/O2系统中复杂的能量动态.
- 二氧化碳振动温度计为探测这些动态过程提供了一个强大的工具.
研究的目的:
- 调查震动激发行为和在冲击加热空气中CO和O2之间的能量传递机制.
- 为关键的碰撞过程生成州特定的速率系数.
- 开发和验证一款改进的振动-振动 (V-V) 模型,用于CO和O2之间的能量转移.
主要方法:
- 实验测量 CO 波动温度的时间依赖性 CO 波动温度使用 CO 波动温度计.
- 国家对国家 (StS) 模拟将振动能量水平视为伪物种.
- 为特定州的速率系数 (CO + O2,O2 + Ar,CO + O) 生成数据集.
主要成果:
- StS模拟显示与实验数据有很好的一致性,性能优于SSH公式.
- 灵敏度分析确定了CO和O2之间的振动-振动 (V-V) 能量转移是关键的.
- 一个新的表达式 CO-O2 V-V 能量转移的衍生,与文献数据 (100-700 K) 验证.
结论:
- 开发的StS方法和新的V-V能量传输模型提供了更准确的高温CO/O2动态的表示.
- 对CO-O2振动能量转移的精细理解对于准确建模燃烧和高能流量至关重要.
- 这项工作为第二部分对二氧化碳氧化和能量转移的进一步调查奠定了基础.
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