高温高压下液态水声速的研究不同状态方程的准确性验证

李芳菲 崔启良 李敏 周强 邹广田

李芳菲, 崔启良, 李敏, 周强, 邹广田. 高温高压下液态水声速的研究不同状态方程的准确性验证[J]. 高压物理学报, 2008, 22(3): 281-285 . doi: 10.11858/gywlxb.2008.03.010
引用本文: 李芳菲, 崔启良, 李敏, 周强, 邹广田. 高温高压下液态水声速的研究不同状态方程的准确性验证[J]. 高压物理学报, 2008, 22(3): 281-285 . doi: 10.11858/gywlxb.2008.03.010
LI Fang-Fei, CUI Qi-Liang, LI Min, ZHOU Qiang, ZOU Guang-Tian. Acoustic Velocity of Water under High Temperature and High Pressure: Validity of the Equation of State of Water[J]. Chinese Journal of High Pressure Physics, 2008, 22(3): 281-285 . doi: 10.11858/gywlxb.2008.03.010
Citation: LI Fang-Fei, CUI Qi-Liang, LI Min, ZHOU Qiang, ZOU Guang-Tian. Acoustic Velocity of Water under High Temperature and High Pressure: Validity of the Equation of State of Water[J]. Chinese Journal of High Pressure Physics, 2008, 22(3): 281-285 . doi: 10.11858/gywlxb.2008.03.010

高温高压下液态水声速的研究不同状态方程的准确性验证

doi: 10.11858/gywlxb.2008.03.010
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    通讯作者:

    周强

Acoustic Velocity of Water under High Temperature and High Pressure: Validity of the Equation of State of Water

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    Corresponding author: ZHOU Qiang
  • 摘要: 研究水的热力学状态方程,对于理解地球及行星科学等起着重要作用,但由于高温高压区域的实验数据较少,该区域的状态方程主要依赖于由低压部分外延或分子动力学模拟计算得到。采用布里渊散射技术测量熔解曲线附近液态水的声速,低温区采用电加热系统,高温区采用激光加热布里渊散射系统,分析比较了由实验测量得到的声速值与用经验状态方程计算的结果之间的差别。结果表明,在温度不超过673 K、压力不超过6.0 GPa的范围内,Abramson方程的计算结果与实验测量结果在误差范围内一致,而Saul 和IAPWS-95的预言值比实验测量值偏高,并且温度越高偏差越大。在压力为21 GPa、温度为890~1 100 K时,实验测量出的水的声速比状态方程预言的结果偏高。

     

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出版历程
  • 收稿日期:  2007-09-21
  • 修回日期:  2007-12-10
  • 发布日期:  2008-09-05

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