液-液斜界面R-T失稳特征的实验研究

江荣宝 黄熙龙 邹立勇 施红辉 吴鋆

江荣宝, 黄熙龙, 邹立勇, 施红辉, 吴鋆. 液-液斜界面R-T失稳特征的实验研究[J]. 高压物理学报, 2018, 32(5): 054201. doi: 10.11858/gywlxb.20180512
引用本文: 江荣宝, 黄熙龙, 邹立勇, 施红辉, 吴鋆. 液-液斜界面R-T失稳特征的实验研究[J]. 高压物理学报, 2018, 32(5): 054201. doi: 10.11858/gywlxb.20180512
JIANG Rongbao, HUANG Xilong, ZOU Liyong, SHI Honghui, WU Jun. Experimental Investigation on the Characteristics of Unstability at Liquid-Liquid Tilted Interface Induced by Rayleigh-Taylor Instability[J]. Chinese Journal of High Pressure Physics, 2018, 32(5): 054201. doi: 10.11858/gywlxb.20180512
Citation: JIANG Rongbao, HUANG Xilong, ZOU Liyong, SHI Honghui, WU Jun. Experimental Investigation on the Characteristics of Unstability at Liquid-Liquid Tilted Interface Induced by Rayleigh-Taylor Instability[J]. Chinese Journal of High Pressure Physics, 2018, 32(5): 054201. doi: 10.11858/gywlxb.20180512

液-液斜界面R-T失稳特征的实验研究

doi: 10.11858/gywlxb.20180512
基金项目: 

国家自然科学基金 11472253

国家自然科学基金 11672277

国家自然科学基金 11602247

科学挑战专题 TZ2016001

详细信息
    作者简介:

    江荣宝(1993—), 男, 硕士研究生, 主要从事界面不稳定性的实验研究. E-mail: 18367053723@163.com

    通讯作者:

    黄熙龙(1988—), 男, 硕士, 助理研究员, 主演从事界面不稳定性研究. E-mail: xlhuang@caep.cn

  • 中图分类号: O357.5

Experimental Investigation on the Characteristics of Unstability at Liquid-Liquid Tilted Interface Induced by Rayleigh-Taylor Instability

  • 摘要: 实验研究了不同加速度下不相溶流体斜界面Rayleigh-Taylor(R-T)不稳定性诱导湍流混合区的发展特征。利用高速阴影测试技术研究了硅油/碘化钾溶液界面R-T不稳定性诱导界面的演化规律,定量分析了混合区发展宽度、界面倾角与时间的关系。通过实验结果分析得出:水平界面与斜界面混合区宽度演化的差别主要体现在后期,前、中期两者演化规律基本一致;界面倾角的演化呈现出两种不同的趋势,随时间先呈抛物线增长,随后线性增长,演化后期流体界面发生翻转;由R-T不稳定性诱导的界面混合与K-H不稳定性诱导的界面混合呈相互竞争的关系。

     

  • 图  实验装置示意

    Figure  1.  Schematic of experimental apparatus

    图  阴影法示意

    Figure  2.  Schematic of shadowgraph

    图  加速度曲线

    Figure  3.  Acceleration curves

    图  高压段初始压力为0.25 MPa时界面湍流混合区发展阴影图

    Figure  4.  Evolution of turbulent mixing zone when the initial pressure of the high pressure section is 0.25 MPa

    图  界面加速度分解

    Figure  5.  Acceleration decomposed at the interface

    图  高压段初始压力为0.40 MPa时界面湍流混合发展阴影图

    Figure  6.  Evolution of turbulent mixing zone when the initial pressure of the high pressure section is 0.40 MPa

    图  斜界面混合区参数定义

    Figure  7.  Parameter definiton of mixing zonein obilique interface

    图  混合区宽度W随时间的演化

    Figure  8.  Evolution of width of turbulentmixing zone over time

    图  界面倾角γ随时间的演化

    Figure  9.  Evolution of obliquity of turbulentmixing zone over time

    表  1  实验参数

    Table  1.   Experimental parameters

    Case Atwood number Initial interfacial thickness/mm γ0/(°) Initial pressure at high pressure section/MPa
    1 0.169 0.721 0 0.25
    2 0.169 0.752 5 0.25
    3 0.169 0.734 0 0.40
    4 0.169 0.761 5 0.40
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出版历程
  • 收稿日期:  2018-01-31
  • 修回日期:  2018-03-28

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