多场耦合下液态金属-水混合流的非传统流体力学特性研究

doi:10.1007/s11708-018-0545-3

Frontiers in Energy

2018, Vol. 12

Issue (2): 276-296 https://doi.org/10.1007/s11708-018-0545-3

本期目录

多场耦合下液态金属-水混合流的非传统流体力学特性研究

张旭东^1,², 孙樾^1,², 陈森^1,², 刘静^1,^2,³(

)

¹. 中国科学院理化技术研究所，中国科学院低温工程学重点实验室，低温生物医学工程学北京市重点实验室，北京 100190，中国
². 中国科学院大学，未来技术学院，北京 100049，中国
³. 清华大学，医学院生物医学工程系，北京 100085，中国

Unconventional hydrodynamics of hybrid fluid made of liquid metals and aqueous solution under applied fields

Xu-Dong ZHANG¹, Yue SUN¹, Sen CHEN¹, Jing LIU²(

)

¹. Beijing Key Lab of Cryo-Biomedical Engineering and Key Lab of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190; School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
². Beijing Key Lab of Cryo-Biomedical Engineering and Key Lab of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190; School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049; Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing 100084, China

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摘要:

当前，液态金属-水混合流在一系列新兴领域展现出广阔的应用前景，例如芯片冷却，软体机器，生物医学等。然而，两种流体在密度，热导率，电导率，氧化性等物理化学性质方面存在巨大的差别，这些差异对于分析混合流体的流体力学特性提出了巨大的挑战。此外，浸没于溶液中的液态金属能够在电场，磁场和化学场等非接触力作用下持续运动和变形，这显然与传统的接触力驱动流体运动不同。同时，液态金属大尺度变形会导致液态金属-水边界的剧烈变化。但是，迄今为止液态金属在水溶液中的运动和变形机理缺乏明确的数学和物理模型来描述。为了推动这个重要领域的发展，本文从实验现象，理论分析和数值模拟三个方面，对液态金属-水混合流的非传统流体力学特性进行综述分析。首先，本文总结了几种典型的液态金属运动和变形奇特现象；其次，从流体力学和化学反应的角度理论解释其流体力学特性；最后，提出了几种用来追踪两相界面的数值模拟方法。通过对液态金属的流体力学特性进行定量描述，奠定了实现液态金属大尺度可逆变形和运动的理论基础，我们便可精确调节液态金属的表面张力，让液态金属拥有更加复杂的运动变形能力。

Abstract：

The hydrodynamic characteristics of hybrid fluid made of liquid metal/aqueous solution are elementary in the design and operation of conductive flow in a variety of newly emerging areas such as chip cooling, soft robot, and biomedical practices. In terms of physical and chemical properties, such as density, thermal conductivity and electrical conductivity, their huge differences between the two fluidic phases remain a big challenge for analyzing the hybrid flow behaviors. Besides, the liquid metal immersed in the solution can move and deform when administrated with non-contact electromagnetic force, or even induced by redox reaction, which is entirely different from the cases of conventional contact force. Owing to its remarkable capability in flow and deformation, liquid metal immersed in the solution is apt to deform on an extremely large scale, resulting in marked changes on its boundary and interface. However, the working mecha- nisms of the movement and deformation of liquid metal lack appropriate models to describe such scientific issues via a set of well-established unified equations. To promote investigations in this important area, the present paper is dedicated to summarizing this unconventional hydrodynamics from experiment, theory, and simulation. Typical experimental phenomena and basic working mechanisms are illustrated, followed by the movement and deformation theories to explain these phenomena. Several representative simulation methods are then proposed to tackle the governing functions of the electrohydrodynamics. Finally, prospects and challenges are raised, offering an insight into the new physics of the hybrid fluid under applied fields.

Key words： liquid metal hybrid fluid hydrodynamics surface tension applied fields self-actuation

收稿日期: 2017-09-27 出版日期: 2018-06-04

通讯作者: 刘静 E-mail: jliu@mail.ipc.ac.cn

Corresponding Author(s): Jing LIU

引用本文:

张旭东, 孙樾, 陈森, 刘静. 多场耦合下液态金属-水混合流的非传统流体力学特性研究[J]. Frontiers in Energy, 2018, 12(2): 276-296.
Xu-Dong ZHANG, Yue SUN, Sen CHEN, Jing LIU. Unconventional hydrodynamics of hybrid fluid made of liquid metals and aqueous solution under applied fields. Front. Energy, 2018, 12(2): 276-296.

链接本文:

https://academic.hep.com.cn/fie/CN/10.1007/s11708-018-0545-3
https://academic.hep.com.cn/fie/CN/Y2018/V12/I2/276

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