根据内能判据对平衡稳定性条件的讨论

The discussion about the equilibrium stability condition by internal energy criterion

对粒子数固定的单相系统的平衡稳定性条件进行了系统的研究．熵判据是基本的平衡判据,但是它一般只适用于孤立系统．文献就是依据熵判据求得了平衡的稳定性条件．但是在实际应用过程中,对于某些经常遇到的物理条件,引入其它判据是更方便的．本文拟依据内能判据求得系统平衡的稳定性条件．

This paper studies the equilibrium stability condition of single phase close system seriously. Entropy criterion is basic equilibrium criterion, but it only can be used in isolate systems .The document gets the equilibrium stability condition by entropy criterion. But it is convenient by other equilibrium criterions in practical discussion. This paper will get the equilibrium stability condition by internal energy criterion