气体粘滞现象的微观机理探讨

An Analysis on Micro Mechanism of the Phenomenon of Gas Viscosity

以气体分子动理论的观点对气体粘滞现象做了定性的微观阐释,给出了一种比较简单的推导粘滞过程宏观规律的数学表达式以及粘滞系数的方法,进而阐述了粘滞系数的微观实质,并对粘滞系数与气体压强的关系以及粘滞系数与气体温度的关系进行了讨论。此种方法避开了过多的、不必要的假设,对于低年级的大学物理热学教学有一定的参考价值。

The article aims to make a micro explanation of gas viscosity from the perspective of gas molecular dynamics. It provides a simple mathematical formula of inferring macro rules of viscosity process and viscosity coefficient method. It further expounds the micro essence of viscosity coefficient and discusses the interaction between viscosity coefficient and gas pressure, viscosity coefficient and gas temperature. The method avoids redundant hypotheses and has a reference to college thermology teaching among lower grades.