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A Constrained Level Set Method for Simulating the Formation of Liquid Bridges

Published online by Cambridge University Press:  20 August 2015

Dongdong He  and
Huaxiong Huang
Dongdong He*
Affiliation:
Department of Mathematics and Statistics, York University, Toronto, Ontario, Canada M3J1P3
Huaxiong Huang*
Affiliation:
Department of Mathematics and Statistics, York University, Toronto, Ontario, Canada M3J1P3
*
Email:[email protected]
Corresponding author.Email:[email protected]
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Abstract

In this paper, we investigate the dynamic process of liquid bridge formation between two parallel hydrophobic plates with hydrophilic patches, previously studied in [1]. We propose a dynamic Hele-Shaw model to take advantage of the small aspect ratio between the gap width and the plate size. A constrained level set method is applied to solve the model equations numerically, where a global constraint is imposed in the evolution [2] stage together with local constraints in the reinitialization [3] stage of level set function in order to limit numerical mass loss. In contrast to the finite element method used in [2], we use a finite difference method with a 5th order HJWENO scheme for spatial discretization. To illustrate the effectiveness of the constrained method, we have compared the results obtained by the standard level set method with those from the constrained version. Our results show that the constrained level set method produces physically reasonable results while that of the standard method is less reliable. Our numerical results also show that the dynamic nature of the flow plays an important role in the process of liquid bridge formation and criteria based on static energy minimization approach has limited applicability.

Keywords

76T9965M06Constrained level set methodHele-Shawliquid bridgesmass conservationmoving interface
Type
Research Article
Information
Communications in Computational Physics , Volume 12 , Issue 2 , August 2012 , pp. 577 - 594
Copyright
Copyright © Global Science Press Limited 2012

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References

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