扩散过程进行速率的计算及讨论

Calculation and Discussion of Entropy Rate of Diffusion Process

基于非平衡系统的局域平衡假设,参照扩散不可逆过程中熵流密度与局域熵产生率的计算,对扩散过程中系统的自由能和吉布斯函数的流密度与局域自由能和吉布斯函数减小率进行了计算,并把它们和熵增加率作了比较和讨论.这些计算和讨论对用辅助热力学函数来研究不可逆过程进行的速率问题提供有益的参考.

Based on the hypothesis of part-equilibrium in non-equilibrium system and calculations of the entropy flow density and the entropy production rate in the irreversible diffusion process, Gibbs free energy, flow density, local free energy and decrease rate of Gibbs energy in diffusion process are calculated and compared with the entropy production rate. These calculations and discussions provided a helpful referrence for research on entropy rate of irreversible processes by auxiliary function of thermodynamics.