Effect of confinement on droplet deformation in shear flow |
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Authors: | Haobo Hua Yibao Li Jaemin Shin Ha-kyu Song |
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Affiliation: | 1. Department of Mathematics, Korea University, Seoul 136-713, Republic of Korea;2. Department of Computational Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea |
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Abstract: | The dynamics of a single droplet under shear flow between two parallel plates is investigated by using the immersed boundary method. The immersed boundary method is appropriate for simulating the drop-ambient fluid interface. We apply a volume-conserving method using the normal vector of the surface to prevent mass loss of the droplet. In addition, we present a surface remeshing algorithm to cope with the distortion of droplet interface points caused by the shear flow. This mesh quality improvement in conjunction with the volume-conserving algorithm is particularly essential and critical for long time evolutions. We study the effect of wall confinement on the droplet dynamics. Numerical simulations show good agreement with previous experimental results and theoretical models. |
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Keywords: | wall effect immersed boundary method shear flow volume conserving remeshing droplet deformation |
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