Ar-N_2系统的相互作用势研究和输运系数计算

STUDY OF THE ANISOTROPIC POTENTIAL AND TRANSPORTCOEFFICIENTS FOR Ar-N2 SYSTEM

对ＢＯＷＥＲＳ等人的Ａｒ－Ｎ２相互作用势进行了修正，并利用量子力学的ＩＯＳＡ方法计算了Ａｒ在Ｎ２气体中的扩散系数和粘滞系数。结果表明，输运系数的计算结果，与实验数据的符合程度得到了明显改善。

n recent years, much attention has been given to the rare gas-N2 potential because of the importance of N2 molecule in aerodynamics and also because it serves as a good prototype for most other common diatomic molecules. In the present work, some parameters in the potential for Ar-N2 system proposed by Bowers et al. has been modified, and the infinite order sudden approximation (IOSA) is employed to calculate the generalized collision integrals for gas phase rotationally inelastic poocesses in the Ar-N2 system. A detailed comparisons are performed between theoretical diffusion and viscosity coefficients and the experimental measurements at various temperatures. It demonstrates the coincidence degree between the theoretical and the experimental results is significantly improved.