零温物态方程输入参数B0K、B0K和0K的确定

吴强; 经福谦; 李欣竹

doi:10.11858/gywlxb.2005.02.001

零温物态方程输入参数B0K、B0K和0K的确定

doi: 10.11858/gywlxb.2005.02.001

中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室，四川绵阳 621900

详细信息

通讯作者:
吴强

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出版历程
- 收稿日期: 2004-06-17
- 修回日期: 2004-07-12
- 发布日期: 2005-06-05

Determination of the Input Parameters B0K, B0K and 0K for 0 K Universal Isothermal Equation of State

Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, CAEP, Mianyang 621900, China

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Corresponding author: WU Qiang

摘要

摘要: 在对Grneisen系数高温高压下演化特性不作任何假设的前提下，建立了一种不依赖于等温物态方程具体形式，通过Hugoniot实验数据直接确定0 K零压等温体积模量B0K及其对压力的一阶导数B0K和初始密度0K等0 K物态方程输入参数的方法。通过与实验和理论数据的分析和比较，表明用这一方法确定的B0K和B0K不仅合理，而且具有很高的精度，特别是B0K的精度，要优于目前传统超声实验的测量精度。此外，这一方法所确定的0K不仅在Grneisen物态方程的框架内与相应的室温零压特性参数相适配，而且与低温热膨胀实验数据所确定的近0 K初始密度0E非常吻合。
- 等温物态方程 /
- 等温体积模量 /
- Hugoniot关系
Abstract: A method that is independent of the concrete forms of the isothermal equation of state is proposed to accurately determine the input parameters, which are the isothermal bulk modulus B0K, its first pressure derivative B0K and the specific density 0K at zero pressure and 0 K temperature, directly from the experimental Hugoniot data and without any assumption on the behavior of Grneisen parameter at high pressures and temperatures. Comparisons of these data with ultrasonic experiments demonstrate that the values of B0K, B0K and 0K calculated from this method are rational and of better precision.
- equation of state /
- isothermal bulk modulus /
- Hugoniot

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