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The Analysis of Noises of Flows across the Superhydrophobic Surfaces with Microscale Structures

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Abstract:

Analysis of Superhydrophobic surfaces is a hot topic recently because of its potential use on drag reduction, lower flow noise, self-cleaning. This paper used VOF model and Lighthill's Acoustic Analogy to simulate the sound pressure of channel flow, and found when fluid flowed across channels, the sound pressure caused by superhydrophobic surfaces was much lower than that of plane surfaces. The macroscale structures and the air stored in the cavities could lower the turbulence kinetic energy, and that could be one of the reasons why flow causes lower flow noise across the superhydrophobic channels.

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Periodical:

Advanced Materials Research (Volumes 535-537)

Pages:

319-322

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.535-537.319

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Online since:

June 2012

Authors:

Dong Song, Bao Wei Song, Hai Bao Hu

Keywords:

Acoustic Analogy, Computational Fluid Dynamics (CFD), Flow Noise, Microscale Structures, Superhydrophobic Surface

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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