自由膨胀和扩散过程不可逆性的热统分析

Analysis of Thermodynamic and Statistics for Irreversibility of Free Expansion and Diffusion Process

从热力学观点和统计观点分别对自由膨胀和扩散过程的不可逆性进行了分析,从热力学观点来看,自由膨胀是在力学不可逆因素下发生的不可逆过程,扩散过程是在化学不可逆因素下发生的不可逆过程;从统计观点看,它们都是由热力学概率小的状态向概率大的状态变化,扩散过程可以看成是两个自由膨胀过程的叠加.

The expansion of freedom and diffusion process was analyzed respectively with thermodynamics and statistics.From the view of thermodynamics,free expansion is irreversible in mechanical factors in the irreversible process,than diffusion process is irreversible in chemical factors in the irreversible process.From a statistical perspective,they are all changes from the small probability thermodynamic state to that of high probability.Diffusion process can be regarded as the superposition of two free expansion ...