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A numerical study on the dynamic behavior of the liquid located between pillar-shaped structures

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Abstract

We numerically investigated the dynamic behavior of the liquid located between and on top of the structures using the 3D Lattice Bolzmann Method. We considered the effect of the contact angle between the structure and the liquid within the range of 90 to 180 degree, the dimensionless height of the structure between 4 and 8, and the dimensionless height of the liquid between 2 and 9 on the dynamic behavior of the liquid. Depending on the contact angle between the structure and the liquid and the relative heights of the liquid and the structure, the liquid takes the form of a liquid film or a liquid droplet. The bigger the contact angle between the structure surface and the liquid grows, the more the liquid existing between the structures moves to the top of the structure and forms a liquid droplet as time passes by. On the other hand, if the contact angle between the structure surface and the liquid is small, the liquid existing between the structures spreads between other structures and over the bottom of the structure and comes to form a liquid film at last. If the structure height is higher, the liquid is tied up between the structures and maintains the form of a liquid film. However, if the liquid height is higher, the liquid forms the shape of a liquid droplet on top of the structures easily.

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Authors and Affiliations

  1. School of Mechanical Engineering, Pusan National University, San 30, Jang Jeon Dong, Geum Jeong Gu, Busan, 609-735, Korea

    Jun Lee, Sung Wan Son, Man Yeong Ha & Hyung Rak Kim

Authors
  1. Jun Lee
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  2. Sung Wan Son
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  3. Man Yeong Ha
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  4. Hyung Rak Kim
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Correspondence to Man Yeong Ha.

Additional information

Recommended by Associate Editor Jong Soo Lee

M. Y. Ha received his B.S. degree from Pusan National University, Korea in 1981, his M.S. degree, in 1983, from Korea Advanced Institute of Science and Technology, Korea, and his Ph.D. from Pennsylvania State University, USA in 1990. Dr. Ha is currently a Professor at the School of Mechanical Engineering at Pusan National University in Buasn, Korea.

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Lee, J., Son, S.W., Ha, M.Y. et al. A numerical study on the dynamic behavior of the liquid located between pillar-shaped structures. J MECH SCI TECHNOL 28, 4221–4232 (2014). https://doi.org/10.1007/s12206-014-0936-2

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  • DOI: https://doi.org/10.1007/s12206-014-0936-2

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