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应用科学学报 ›› 1999, Vol. 17 ›› Issue (1): 114-118.

• 论文 • 上一篇    下一篇

低表面能涂层降低流体噪声的试验研究

田军, 薛群基   

  1. 中国科学院兰州化学物理研究所
  • 收稿日期:1997-03-26 修回日期:1998-03-02 出版日期:1999-03-31 发布日期:1999-03-31
  • 基金资助:
    国家自然科学基金资助项目

The Reduction of Flow Noise by Low Surface Energy Coating

TIAN JUN, XUE QUNJI   

  1. Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000
  • Received:1997-03-26 Revised:1998-03-02 Online:1999-03-31 Published:1999-03-31

PDF

69

被引次数

5

摘要： 给出了非溶性低表面能涂层在03B水筒中铝合金回转体模型上降低流噪声的试验结果;用反射傅立叶红外光谱、电子显微镜和化学用电子分析能谱探讨了降噪涂层表面上的化学结构状态.发现涂层表面上的低表面能材料集聚和微孔状结构使涂层表面具有很低的表面能特性,引起模型流噪声下降.

关键词: 低表面能, 涂层表面, 降低流噪声

Abstract: This paper aims at predicting the levels of the boundary layer noise as a function of the speed and the frequency, which based on the results obtained by flow-noise studies performed with a rotating cylinder in the boundary layer of the test section of water tunnel. The coating containing rich low surface energy materials is a hydrophobic and porous material. The covered coating model provides low dispersive and polar components of surface energy by decreasing bonds between water and coating, thus, the flow noise of the covered coating model can be decreased by 4~18dB in 4~80kHz.

Key words: coating surface, low surface energy, reduction of flow noise