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石油醚在流体静高压下的超声声速、衰减、密度和绝热压缩系数
引用本文:苏Fang 谢斌.石油醚在流体静高压下的超声声速、衰减、密度和绝热压缩系数[J].高压物理学报,1994,8(2):81-86.
作者姓名:苏Fang  谢斌
作者单位:中国科学技术大学基础物理中心,中国科学技术大学结构分析开放实验室,中国科学技术大学无线电电子学系
摘    要: 专门设计了用脉冲-回波-重合法在不同静水压下测量液体声速的装置,并对石油醚在0.1~650 MPa流体静压力范围内测量了其超声声速和衰减系数。还通过测量体积压缩量和质量得到石油醚密度ρ随流体静压力的变化。最后,给出了石油醚的绝热压缩系数β与流体静压力的关系。

关 键 词:流体静压力  超声声速  衰减系数  密度  绝热压缩系数
收稿时间:1993-07-05;

ULTRASONIC VELOCITY AND ATTENUATION COEFFICIENT, DENSITY AND ADIABATIC COMPRESSIBILITY OF PETROLEUM ETHER UNDER HIGH HYDROSTATIC PRESSURE
Su Fang,Xie Bin,Wu Kunyu.ULTRASONIC VELOCITY AND ATTENUATION COEFFICIENT, DENSITY AND ADIABATIC COMPRESSIBILITY OF PETROLEUM ETHER UNDER HIGH HYDROSTATIC PRESSURE[J].Chinese Journal of High Pressure Physics,1994,8(2):81-86.
Authors:Su Fang  Xie Bin  Wu Kunyu
Institution:1. Center of Fundamental Physics, University of Science and Technology of China, Hefei 230026, China;2. Structure research Laboratory, University of Science and Technology of China, Hefei 230026, China;3. Department of Radio and Electronics, University of Science and Technology of China, Hefei 230026, China
Abstract:An apparatus for measuring ultrasonic velocity of liquid under different hydrostatic pressure was specially designed with the method of Pulse-Echo-overlap. Under the hydrostatic pressure ranged from 0.1 to 650 MPa, we measured ultrasonic velocity and attenuation coefficient of petroleum ether which is an important liquid-medium for transmitting pressure. An empirical formula of experimental data was obtained. The pressure dependence of ultrasonic velocity c is as follows: c=1. 063+6.771×10-3p-2.282×10-5p2+5.449×10-8p3-6.077×10-11p4+ 2.436 × 10-14p5 (0≤p≤700 MPa). In addition, we measured mass and compressed volume, getting the variation of density of petroleum ether with pressure: ρ=0.6246+1.007×10-3p-1.823×10-6p2+2.548×10-9p3-1.393×10-12p4 (0≤p≤700 MPa). Finally, according to the equation c=(1/ρβ)1/2, the relation between hydrostatic pressure and adiabatic compressibility coefficient of petroleum ether were obtained.
Keywords:hydrostatic pressure  ultrasonic velocity  attenuation coefficient  density  adiabaticcompressibility coefficient  
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