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Chinese Journal of High Pressure Physics  > 2008  >  22(3): 281-285 .
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
shu

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

doi: 10.11858/gywlxb.2008.03.010

  • National Laboratory of Superhard Materials, Jilin University, Changchun 130012, China

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  • Corresponding author: ZHOU Qiang
  • Received Date: 21 Sep 2007
  • Rev Recd Date: 10 Dec 2007
  • Issue Publish Date: 05 Sep 2008
    Abstract
  • The knowledge of the thermodynamic equation of state of fluid water plays an important role in understanding of many phenomena within the purview of the earth and planetary sciences. However, data are sparse in the high temperature and high pressure region and most equations of state for water, at high pressures, rely heavily on extrapolation of data or calculations of molecular dynamics. This paper presents the acoustic velocity of water measured by Brillouin scattering technique at different temperature and pressure, and compares the velocity with those predicted by the equations of state. Our measured velocities of water are lower than those predicted by Saul and IAPWS-95, while they are the same as those predicted by Abramson within 6.0 GPa and 673 K; on the other hand, at 21 GPa and 890~1 100 K conditions, the measured velocities are higher than those predicted by all the three equations of state.

     

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