多液滴热毛细迁移的研究

张朔婷; 胡良; 段俐; 康琦

doi:10.6052/0459-1879-13-244

多液滴热毛细迁移的研究

doi: 10.6052/0459-1879-13-244

中国科学院力学研究所国家微重力实验室, 北京100190

基金项目: 国家自然科学基金（11372328，11032011）和中国载人航天工程、中国科学院空间科学战略性先导科技专项（XDA04020405，XDA04020202-05）资助.

详细信息

作者简介:
康琦，研究员，主要研究方向：微重力流体物理，实验流体力学，光学测试技术.E-mail：kq@imech.ac.cn

中图分类号: O363.2
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- 被引次数: 0
出版历程
- 收稿日期: 2014-04-22
- 修回日期: 2014-08-12
- 刊出日期: 2014-09-18

DROPLET INTERACTIONS IN THERMOCAPILLARY MIGRATION

National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China

Funds: The project was supported by the National Natural Science Foundation of China (11372328, 11032011), China Manned Space Engineering and the Strategic Priority Research Program on Space Science, the Chinese Academy of Sciences (XDA04020405, XDA04020202-05).

摘要

摘要: 通过密度匹配方法地面模拟微重力环境，以豆油和硅油作为实验系统母液和液滴，研究非均匀温度场中液滴热毛细迁移行为. 用马赫- 泽德干涉仪测量实验系统背景温度场. 用阴影法观测液滴热毛细迁移. 单液滴实验中，得到与YGB 理论预测趋势相一致的结果；双滴实验中，观察到小液滴超越大液滴现象；实验表明液滴迁移过程中液体的黏性系数起重要作用，小液滴超越大液滴过程中，两液滴水平位移都出现明显偏移，且大液滴横向位移更显著. 创新性的设计了三相多液滴热毛细迁移实验，为实际工业生产中多相分离问题提供科学研究基础.
- 多液滴 /
- 微重力 /
- 温度梯度 /
- 热毛细迁移 /
- 双液滴相互作用
Abstract: Experiments were performed, with the method of density match in a terrestrial environment, to study the migration and interaction of drops with different diameters in matrix liquid under temperature gradient field. Thermocapillary migrations for both single and double droplets are observed via shadow method. For double droplets migration experiments, it can be observed that small droplet always moves faster than large droplet for different types of oils. The results indicate that there exist horizontal movements for both small and large droplets, and the large droplet has larger extent than small droplet.
- droplets /
- microgravity /
- temperature gradient /
- thermocapillary migration /
- interaction

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参考文献(10)

Young NO, Goldstein JS, Block MJ. The motion of bubbles in a vertical temperature gradient. Journal of Fluid Mechanics, 1959, 6(3): 350-356

Xie JC, Lin H, Zhang P, et al. Space experiment on thermocapillary drop migration at large Marangoni. In: Proc. of 54th International Astronautical Congress, Bremen, Germany, IAC-03-J.3.03, 2003

常磊, 尹兆华, 胡文瑞. 变形影响下液滴热毛细迁移运动的瞬态行为. 中国科学: 物理学力学天文学, 2011, 41(8): 960-968 (Chang Lei, Yin Zhaohua, Hu Wenrui. Transient behavior of the thermocapillary migration of drops under the influence of deformation. Scientia Sinica Phys Mech Astron, 2011, 41(8): 960-968 (in Chinese))

Wei H, Subramanian RS. Thermocapillary migration of a small chain of bubbles. Physics of Fluids, 1993, A5(7): 1583-1595

Sun R, Hu W. Planar thermocapillary migration of two bubbles in microgravity environment. Physics of Fluids, 2003, 15(10): 3015-3027

Nas S, Muradoglu M, Tryggvason G. Pattern formation of drops in thermocapillary migration. International Journal of Heat and Mass Transfer, 2006, 49: 2265-2276

崔海亮, 胡良, 段俐等. 气泡热毛细迁移的空间实验研究. 中国科学: 物理学力学天文学, 2007, 37(5):674-683 (Cui Hailiang, Hu Liang, Duan Li, et al. Stochastic resonance in bistable Duffing oscillators and its dynamical mechanisms. Scientia Sinica Phys Mech Astron, 2007, 37(5): 674-683 (in Chinese))

Kang Q, Hu L, Huang C, et al. Experimental investigations on interaction of two drops by thermocapillary-buoyancy migration. International Journal of Heat and Mass Transfer, 2006, 49: 2636-2641

尹兆华, 常磊, 胡文瑞等. 不变形双滴的热毛细迁移及相互作用. 应用数学和力学, 2011, 32(7): 761-773 (Yin Zhaohua, Chang Lei, Hu Wenrui, et al. Thermocapillary migration and interaction of two nondeform able droplets. Applied Mathematics and Mechanics, 2011, 32(7): 761-773 (in Chinese))

常磊. 液滴热毛细迁移研究. [博士论文]. 北京: 中国科学院力学研究所, 2011. 83-85 (Chang Lei. Study on thermocapillary migration of drops. [PhD Thesis]. Beijing: Institute of Mechanics, Chinese Academy of Sciences, 2011. 83-85 (in Chinese))

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