arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1106.2273cond-mat.stat-mech
收藏

论欧拉热力学中的熵

On entropy in eulerian thermodynamics

Christian Frønsdal, Abhishek Pathak

摘要:

对于热力学的学生来说,最难的学科是熵。在本文中,我们研究实际的,实际的应用熵的两个简单的系统,均质板与固定的边界值的温度,和一个孤立的大气中存在的静态引力场。第一个给出了有价值的洞察熵的性质,随后适用于第二个系统。热力学的一个基本原则是,一个扩展的、均匀的和孤立系的平衡的特征在于均匀的温度分布,并且人们强烈地认为,在存在重力的情况下,这仍然是正确的。我们发现,这是一致的扩展热力学方程,但熵进入一个重要的方式。等效原则呈现出一个新的面貌。

英文摘要:

To the student of thermodynamics the most difficult subject is entropy. In this paper we examine the actual, practical application of entropy to two simple systems, the homogeneous slab with fixed boundary values of the temperature, and an isolated atmosphere in the presence of the static gravitational field. The first gives valuable insight into the nature of entropy that is subsequently applied to the second system. It is a basic tenet of thermodynamics that the equilibrium of an extended, homogeneous and isolated system is characterized by a uniform temperature distribution and it is a strongly held belief that this remains true in the presence of gravity. We find that this is consistent with the equations of extended thermodynamics but that entropy enters in an essential way. The principle of equivalence takes on a new aspect.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑