过冷大水滴变形及阻力特性的温度影响实验研究

王桥, 肖京平, 刘森云, 肖春华

王桥, 肖京平, 刘森云, 肖春华. 过冷大水滴变形及阻力特性的温度影响实验研究[J]. 实验流体力学, 2016, 30(3): 21-26. DOI: 10.11729/syltlx20160028
引用本文: 王桥, 肖京平, 刘森云, 肖春华. 过冷大水滴变形及阻力特性的温度影响实验研究[J]. 实验流体力学, 2016, 30(3): 21-26. DOI: 10.11729/syltlx20160028
Wang Qiao, Xiao Jingping, Liu Senyun, Xiao chunhua. Experimental study on temperature effecton deformation and drag characteristics of supercooled large droplet[J]. Journal of Experiments in Fluid Mechanics, 2016, 30(3): 21-26. DOI: 10.11729/syltlx20160028
Citation: Wang Qiao, Xiao Jingping, Liu Senyun, Xiao chunhua. Experimental study on temperature effecton deformation and drag characteristics of supercooled large droplet[J]. Journal of Experiments in Fluid Mechanics, 2016, 30(3): 21-26. DOI: 10.11729/syltlx20160028

过冷大水滴变形及阻力特性的温度影响实验研究

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  • 中图分类号: 11-5266/V

Experimental study on temperature effecton deformation and drag characteristics of supercooled large droplet

  • 摘要: 为探索温度对过冷大水滴(SLD)变形及阻力特性的影响规律,在常温和低温环境下开展了过冷大水滴动力学特性的实验研究。研究表明:过冷大水滴在快速加速气流中运动时,水滴变形特征和阻力特性随We 数的变化规律主要分为3个阶段:波动阶段、阶跃阶段和平滑阶段,并会受到低温环境的影响;同一We 数的水滴变形率、阻力系数会呈现出随着温度的降低而降低的趋势;温度对处于波动阶段的过冷水滴影响最大,随后在阶跃和平滑阶段,温度对水滴动力学行为的影响逐渐减小。
    Abstract: In order to explore the influence of temperature on the dynamic characteristics of the supercooled large droplet (SLD),SLD dynamics experiments were conducted in room tem-perature and low-temperature environments.Studies have shown that:when a supercooled large droplet is moving in a rapidly accelerated stream,the changing history of the drop’s deformation characteristics and drag characteristics with the variation of the We number can be divided into three stages:fluctuation stage,step stage and smooth stage,and it is subj ected to the influence of the low-temperature environment.The deformation rate and drag coefficient of the droplet with the same We number decrease with decreasing temperature.In the fluctuation phase,tem-perature has the largest influence on SLD dynamic characteristics,but the temperature effect weakens in the step and smooth stage.
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    其他类型引用(4)

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出版历程
  • 刊出日期:  2016-06-24

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