北京航空航天大学学报 ›› 2001, Vol. 27 ›› Issue (3): 317-320.

• 论文 • 上一篇    下一篇

非平衡状态下双原子分子振动态的分布

张劲柏, 李椿萱   

  1. 北京航空航天大学 飞行器设计与应用力学系
  • 收稿日期:1999-12-24 出版日期:2001-03-31 发布日期:2010-09-27
  • 作者简介:张劲柏(1972-),男,江西吉安人,博士生,100083,北京.

Vibrational Nonequilibrium Distribution of Diatomic Molecules

ZHANG Jin-bai, LI Chun-xuan   

  1. Beijing University of Aeronautics and Astronautics, Dept. of Flight Vehicle Design and Applied Mechanics
  • Received:1999-12-24 Online:2001-03-31 Published:2010-09-27

摘要: 为尝试修正Hammerling假设,在仔细分析了非平衡状态下双原子分子振动态的分布特征的基础上,提出了新的分布近似函数.该近似分布函数能很好地体现非平衡状态下双原子分子振动态分布的主要特征,其在离解反应速率的理论计算中的应用也证明是成功的.同时还部分证明了Park的双温模型具有其理论基础.

Abstract: An attempt is made in the present paper to develop an analytical model to modify the Hammerling-s hypothesis in dealing with the vibration modes for diatomic molecules under nonequilibrium states. The characteristics of distribution functions for vibration modes of diatomic molecules undergoing a nonequilibrium relaxation process are studied and a new approximate form of distribution functions is proposed. The calculations of test cases show that the majority of the characteristics of the vibration modes can be represented by the deduced approximate function. The utilization of the formulation on computations of the rate of the N2 dissociation undergoing a nonequilibrium relaxation process has demonstrated to be successful, and the study also partly verify the theory behind Park-s two-temperature model.

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