Simulation Research of Slip Flow in Superhydrophobic Surface

Abstract:

Superhydrophobic materials can be used in building materials, such as glass, ceramics, and concrete, which keep buildings clean. Slip phenomenon plays an important role on the hydrophobic of solid surface. Based on the model of Volume of Fluid (VOF) for given inlet velocity and outlet pressure, the unilateral slip flow of three typical physical models (rectangular, triangular and round head shape physical model) in superhydrophobic microchannel are numerically simulated. Furthermore, the hydrophobic laws are analyzed in the condition of different shapes and dimensions, and the optimal dimension and shape of microstructure is obtained. Numerical simulation results show that the slip happens in the air-liquid interface of the microchannel, and when the micro rib’s height is 40μm, the slip velocity for rectangular physical model reaches to 125mm/s. When the micro rib’s height is at 50μm-100μm, the round head shape physical model has the largest slip velocity of 350mm/s. This study plays an important guiding role for the design and application of the superhydrophobic surface.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 3525-3528
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.3525
• Online since: May 2012
• Authors: Jian Zhuang, Meng Meng Du, Li Min Meng, Li Jun Hou, Jian Bo Ruan
• Keywords: Numerical Simulation, Slip Flow, Superhydrophobic Microchannel, Superhydrophobic Surface

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