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气液两相流中的声速研究 被引量:11

Study on the sound velocity in a gas-liquid flow
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摘要 气液两相流在工业各领域中广泛存在,而声速是描述其声学性质的一个重要参数。本文从流体的体积弹性模量的定义出发,推导了气液两相流中的声速随含气率的变化关系式,即混合流体的Wood声速公式,将其声速的部分计算结果和其他作者的实验数据进行了比较,吻合良好。并通过COMSOL有限元模拟软件得到不同气体分布下圆管谐振腔最低阶模式的共振频率,间接数值模拟研究了含气率对声速的影响。模拟结果与理论计算结果一致,当气液两相流中含气率较低时,声速随含气率的增大急剧减小。本研究结果为确定声速与气液两相流中的含气率间的关系提供了参考依据。 Gas-liquid flows exist in various industry fields. One of the important parameters to describe gas-liquid flows is sound velocity. The relationship of the sound velocity and the gas rate in a gas-liquid flow is derived from the definition of the fluid bulk modulus. The calculated results and the experimental results by Henry are in good agreement. And the pipe resonance frequency of the lowest order mode under the different gas distribution is received by COMSOL finite element simulation software. The effects of gas rate on the sound velocity are indirectly numerically studied. Simulation results are consistent with the theoretica Gas-liquid flows exist in various industry fields. One of the important parameters to describe gas-liquid flows is the sound velocity.1 results. When gas exists in a gas-liquid flow even in a low gas rate, the sound velocity decreases sharply. This study offers a reference for the determination of the relationship of the sound velocity and the gas rate in a gas-liquid flow.
出处 《应用声学》 CSCD 北大核心 2015年第4期373-376,共4页 Journal of Applied Acoustics
基金 国家自然科学基金项目(40774099 11134011 11274341) 国家重大科研装备研制项目"深部资源探测核心装备研发"(ZDYZ2012-1)-07子项目"深部矿床测井系统"资助
关键词 气液两相流 含气率 声速 数值模拟 Gas-liquid flow, Gas rate, Sound velocity, Numerical simulation
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参考文献7

  • 1MALLOCK A. The damping of sound by frothy liquids[J]. Proc. R. Soc. London, Ser. A, 1910, 84(572): 391-395.
  • 2KIEFFER S W. Sound speed in liquid-gas mixtures: Water-air and water-steam[J]. J. Geophys. Res., 1977, 82(20): 2895-2904.
  • 3HSIEH D Y, PLESSET M S. On the propagation of sound in a liquid containing gas bubbles[J]. Phys. Flu- ids (1958-1988), 1961, 4(8): 970-975.
  • 4WOOD A B. A textbook of sound[M]. London: Neill & Co. Ltd. , 1960.
  • 5HENRY R E, GROLMES M A, FAUSKE H K. Pressure- pulse propagation in two-phase one- and two-component mixtures[R]. Argonne National Laboratory Report ANL- 7792, 1971.
  • 6陈德华,王秀明,车承轩,丛健生,徐德龙,王小民.一种气液两相介质含气量检测的瞬态共振声谱法[J].中国科学:物理学、力学、天文学,2010,40(7):842-849. 被引量:2
  • 7车承轩.圆管谐振腔在气液两相流中的共振声谱研究[D].北京:中国科学院声学研究所,2010.

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