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Mechanical Sciences An open-access journal for theoretical and applied mechanics
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Volume 6, issue 2
Mech. Sci., 6, 211-220, 2015
https://doi.org/10.5194/ms-6-211-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Mech. Sci., 6, 211-220, 2015
https://doi.org/10.5194/ms-6-211-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 01 Oct 2015

Research article | 01 Oct 2015

Shape and force analysis of capillary bridge between two slender structured surfaces

Z. F. Zhu1, J. Y. Jia1, H. Z. Fu2, Y. L. Chen1, Z. Zeng1, and D. L. Yu1 Z. F. Zhu et al.
  • 1School of Mechano-Electronic Engineering, Xidian University, Xi'an, China
  • 2ZTE Corporation, Shenzhen, China

Abstract. When a capillary bridge of a constant volume is formed between two surfaces, the shape of the liquid bridge will change as the separation between those surfaces is varied. To investigate the variable forces and Laplace pressure of the capillary bridge, as the shape the bridge evolves, a pseudo-three-dimensional force model of the capillary bridge is developed. Based on the characteristics of the slender structured surface, an efficient method is employed to directly solve the differential equations defining the shape of the capillary bridge. The spacing between the plates satisfying the liquid confined within the hydrophobic region of the structured surface is calculated. The method described in this paper can prevent meshing liquid surfaces such that, compared with Surface Evolver simulations, the computing speed is greatly improved. Finally, by comparing the results of the finite element simulations performed with Surface Evolver with those of the method employed in this paper, the practicality of the method is demonstrated.

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