Fabrication of Micro-Nano Structured Super-Hydrophobic Surface and Drag Reduction in Channels

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In order to research the characteristic of flow drag reduction on large area super-hydrophobic surface, we have been designed a new processing technology to construct a micro-nano structure super-hydrophobic surfaces which formed by surface nanometer fly ash cenosphere. The experimental result of the flow drag reduction tested on macro-scale channel in laminar flow is very well, and the maximum drag reduction is 25.6%.

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297-302

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July 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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[1] Barthlott W, Neinhuis C. Purity of the sacred lotus, or escape from contamination in biological surfaces. Planta, 1997, 202: 1-8.

DOI: 10.1007/s004250050096

Google Scholar

[2] Neinhuis C, Barthlott W. Characterization and Distribution of Water-repellent, Self-cleaning Plant surfaces. Annals of Botany, 1997, 79(6): 667-677.

DOI: 10.1006/anbo.1997.0400

Google Scholar

[3] Feng L, Li SH, Li YS, et al. Super-hydrophobic surfaces: from natural to artificial. Advanced Materials, 2002, 14 (24): 1857-1860.

DOI: 10.1002/adma.200290020

Google Scholar

[4] Watanabe K, Yanuar H, Udagawa H.Drag reduction of Newtonian fluid in a circular pipe with highly water-repellent wall. Fluid Mech, 1999, 381:225- 238.

DOI: 10.1017/s0022112098003747

Google Scholar

[5] Ou J, Perot B, Rothstein J P. Laminar drag reduction in microchannels using ultrahydrophobic surfaces.Phys Fluids. 2004, 16(12): 4635-4643.

DOI: 10.1063/1.1812011

Google Scholar

[6] C Henoch, T N Krupenkin, P Kolodner, J A Taylor, M S Hodes, A M Lyons. Turbulent Drag Reduction Using Superhydrophobic Surfaces. 3rd AIAA Flow Control Conference 5-8 June 2006, San Francisco, California.

DOI: 10.2514/6.2006-3192

Google Scholar

[7] LU Si, YAO Zhaohui*, HAO Pengfei, FU Chengsong. Drag reduction in ultrahydrophobic channels with micro-nano structured surfaces. SCIENCE CHINA: Physics, Mechanics & Astronomy, 2010, 53(7): 1298-1305.

DOI: 10.1007/s11433-010-4035-9

Google Scholar

[8] Jiang Lei, Feng Lin. Bionic intelligent nano interface materials. Beijing: Chemical Industry Press, 2007: 51-142(in Chinese).

Google Scholar

[9] Blevins R D. Applied Fluid Dynamics Handbook. New York: Van Nostrand Reinhold, 1984.

Google Scholar

[10] Patanka N A. On the modeling of hydrophobic contact angles on rough surfaces. Langmuir, 2003, 19: 1249–1253.

DOI: 10.1021/la026612+

Google Scholar

[11] Onda T, Shibuichi S, Satoh N, et al. Super-water-repellent fractal surfaces. Langmuir, 1996, 12: 2125–2127.

DOI: 10.1021/la950418o

Google Scholar

[12] Chen W, Fadeev A Y, Hsieh M C, et al. Ultrahydrophobic and ultralyophobic surfaces: Some commentsand examples. Langmuir, 1999, 15: 3395–3399.

DOI: 10.1021/la990074s

Google Scholar