Estimation of the Thermodynamic Limit of Overheating for Bulk Water from Interfacial Properties

Estimation of the Thermodynamic Limit of Overheating for Bulk Water from Interfacial Properties
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从界面性质估计散装水过热的热力学极限

DOI:
10.1007/s10765-013-1518-8
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发表时间:
2013
影响因子:
2.2
通讯作者:
S. E. Quinones-Cisneros
S. E. Quinones-Cisneros
中科院分区:
工程技术4区
文献类型:
--
作者:
A. R. Imre;A. Baranyai;U. K. Deiters;P. T. Kiss;T. Kraska;S. E. Quinones-Cisneros

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过热或膨胀的极限是液体的一个重要性质,这与涉及加压液体的过程的设计和安全评估有关。本文采用Baranyai和Kiss的分子势模型,通过分子动力学计算机模拟计算了水的热力学稳定极限,即所谓的旋节线。旋节压力是由液-气界面层内的最大切向压力得到的。的结果进行比较,各种状态方程的预测。基于这些比较,一组状态方程被确定,它给出了可靠的结果,在亚稳态(过热或膨胀)的液体区的水低至MPa。
The limit of overheating or expanding is an important property of liquids, which is relevant for the design and safety assessment of processes involving pressurized liquids. In this work, the thermodynamic stability limit—the so-called spinodal—of water is calculated by molecular dynamics computer simulation, using the molecular potential model of Baranyai and Kiss. The spinodal pressure is obtained from the maximal tangential pressure within a liquid–vapor interface layer. The results are compared to predictions of various equations of state. Based on these comparisons, a set of equations of state is identified which gives reliable results in the metastable (overheated or expanded) liquid region of water down toMPa.
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影响因子: 3.9
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