An improved kinetic theory approach for calculating the thermal conductivity of polyatomic gases
An improved kinetic theory approach for calculating the thermal conductivity of polyatomic gases
复制标题
计算多原子气体热导率的改进动力学理论方法
DOI:
10.1080/00268976.2014.951703
复制
发表时间:
2015
影响因子:
1.7
通讯作者:
E. Bich
中科院分区:
文献类型:
--
作者:
R. Hellmann;E. Bich
A new kinetic theory approach for calculating the thermal conductivity of a dilute polyatomic gas from the intermolecular pair potential is presented. The contributions due to internal degrees of freedom have been separated into a classical rotational and a quantum-mechanical vibrational part. Assuming that the vibrational states of the molecules do not significantly influence the collision trajectories, and that vibrationally inelastic and vibrationally resonant collisions are rare, we have obtained a simple self-diffusion mechanism for the vibrational contribution to the thermal conductivity. For non-polar gases like methane or nitrogen, the new approach yields thermal conductivity values that are very close to those obtained with the previously used kinetic theory approach. However, for polar gases like hydrogen sulphide and water vapour, the values obtained with the new scheme are much closer to the most accurate experimental data.
登录
查看更多内容
影响因子:
4.6
作者:
P. Correia;B. Schramm;K. Schäfer
通讯作者:
K. Schäfer
影响因子:
4.4
作者:
J. Hirschfelder
通讯作者:
J. Hirschfelder
DOI:
10.1016/s0378-4371(02)00787-2
发表时间:
2002
影响因子:
3.3
作者:
E. Bich;S. Bock;E. Vogel
通讯作者:
E. Vogel
影响因子:
4.4
作者:
H. Shin
通讯作者:
H. Shin
DOI:
10.1016/0378-4371(88)90072-6
发表时间:
1988
影响因子:
3.3
作者:
R. Oord;M. D. Lignie;J. Beenakker;J. Korving
通讯作者:
J. Korving