论文标题
评估经典机械系统中的小孔 - 斯托多拉定理：熵产生的研究
Evaluating the Gouy-Stodola Theorem in Classical Mechanic Systems: A Study of Entropy Generation
论文作者
论文摘要
我们建议将熵一代$（\ dot s_ {gen} $）概念应用于机械系统：众所周知的简单摆。在考虑理想情况时，只有保守力在系统上起作用，一个人具有$ \ dot s_ {gen} = 0 $，并且熵变化为无效。但是，如下所示，时间熵变化并非始终为无效。考虑到与摆速度成正比的非保守力，随着$ t $的增长，振荡幅度降低到零。在这种情况下，$ \ dot s_ {gen}> 0 $表明它与耗能相关，如Gouy-Stodola定理所述。因此，如下所示，非保守力的强度越大，能量耗散和熵变化的时间速率越大。
We propose to apply the entropy generation $(\dot S_{gen}$) concept to a mechanical system: the well-known simple pendulum. When considering the ideal case, where only conservative forces act on the system, one has $\dot S_{gen}=0$, and the entropy variation is null. However, as shall be seen, the time entropy variation is not null all the time. Considering a non-conservative force proportional to the pendulum velocity, the amplitude of oscillations decreases to zero as $t$ grows. In this case, $\dot S_{gen}>0$ indicates that it is related to energy dissipation, as stated by the Gouy-Stodola theorem. Hence, as shall be seen, the greater the strength of the non-conservative force, the greater are both the energy dissipation and the time rate of entropy variation.
