Numerical Investigation of Deformation of Liquid Metal Indium in a Strong Electric Field Using a Phase-Field Method

2018 ◽  
Author(s):  
Liu Gang ◽  
Zhu Yu
Keyword(s):  
Liquid Metal ◽  
Electric Field ◽  
Numerical Investigation ◽  
Phase Field ◽  
Strong Electric Field ◽  
Field Method ◽  
Phase Field Method

Characterizing Ice Crystal Growth Behavior Under Electric Field Using Phase Field Method

2009 ◽  
Vol 131 (7) ◽  
Author(s):  
Zhi Zhu He ◽  
Jing Liu
Keyword(s):  
Crystal Growth ◽  
Electric Field ◽  
Phase Field ◽  
Field Method ◽  
Growth Behavior ◽  
Phase Field Method ◽  
Competitive Growth ◽  
Ice Crystal ◽  
Injury Mechanisms ◽  
Crystal Growth Behavior

In this article, the microscale ice crystal growth behavior under electrostatic field is investigated via a phase field method, which also incorporates the effects of anisotropy and thermal noise. The multiple ice nuclei’s competitive growth as disclosed in existing experiments is thus successfully predicted. The present approach suggests a highly efficient theoretical tool for probing into the freeze injury mechanisms of biological material due to ice formation during cryosurgery or cryopreservation process when external electric field was involved.

Numerical simulation of electrohydrodynamics of a compound drop based on the ternary phase field method

2019 ◽  
Vol 103 (1) ◽  
pp. 003685041988647
Author(s):  
Yu Su ◽  
Tong Yu ◽  
Guicheng Wang ◽  
Chunyan Zhang ◽  
Zhiqiang Liu
Keyword(s):  
Finite Element ◽  
Numerical Methods ◽  
Electric Field ◽  
Large Deformation ◽  
Phase Field ◽  
Ternary Phase ◽  
Field Method ◽  
Phase Field Method ◽  
Weak Electric Field ◽  
Multiphase Fluid

Analytical and numerical methods are often used to study the behavior of multiphase fluid under electric field. Compared with analytical methods, numerical methods can simulate the real physical phenomenon of multiphase fluid dynamics in a large deformation range. The finite element method is mainly applied in two-phase fluid currently, although it can be used to analyze the small and large deformation of multiphase fluid under electric field. This article attempts to develop a finite element model of a concentric compound drop immersed in continuous medium under electric field based on the ternary phase field method and simulate the electrohydrodynamics of the compound drop whose core phase, shell phase, and continuous phase are different. The small deformation simulation results of the compound drop under weak electric field are compared with the analytical results of previous researchers from the three aspects, namely, deformation, free charge distribution, and flow pattern. This model is proved to be effective under certain conditions. Based on this premise, the large deformation and breakup of the compound drop under high electric field are further simulated to investigate the mechanism of compound drop breakup preliminarily.

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