论文标题
进一步关于超流氦的喷泉效应
Further On the Fountain Effect in Superfluid Helium
论文作者
论文摘要
在上一篇论文（Attard 2022d）在超富氦气中的喷泉压力上，这表明实验证实的H. London（1939）的表达在热力学上等同于化学势的平等性。然而，这种理论等效性并未反映在实验数据中。现在，该问题已追溯到Donnelly和Barenghi（1998）从测得的热容量中得出的焓和熵的错误。在本文中，校正的热力学数据在两个表达式和测得的喷泉压力之间几乎具有确切的一致性。对于能量最小化的物理解释是驱动喷泉效应和超流量流动的原理。
In the previous paper (Attard 2022d)on the fountain pressure in superfluid helium, it was shown that the experimentally confirmed expression of H. London (1939) was thermodynamically equivalent to equality of chemical potential. However this theoretical equivalence was not reflected in the experimental data. The problem has now been traced to errors in the enthalpy and entropy derived from the measured heat capacity by Donnelly and Barenghi (1998). In this paper the corrected thermodynamic data yields almost exact agreement between the two expressions and the measured fountain pressure. A physical explanation is given for energy minimization as the principle that drives the fountain effect and superfluid flow more generally.
