疏水材料微尺度凹坑流滑移速度特性研究

Zhaopeng Zhang, Zhengyin Ye, Kun Ye

科研成果: 期刊稿件文章同行评审

摘要

The concave configuration represents a prevalent and pivotal structural form within hydrophobic materials. Comprehending the slip velocity characteristics associated with concave surfaces carries profound implications for the design of these materials. This investigation employs the Discrete Unified Gas-Kinetic Scheme (DUGKS) to simulate the low-speed, two-dimensional concave flow within the Knudsen number range spanning from 0.01 to 0.5. The numerical simulation results reveal a noteworthy variation in slip velocity patterns in relation to the Knudsen number. As the concave size decreases (Kn > 0.3), the slip velocity within the concave region is lower than that on a smooth wall. Conversely, as the concave size increases (Kn < 0.2), the slip velocity exceeds that of a smooth wall. Additionally, there are discernible jumps in the statistically-averaged slip velocity at the cavity's boundaries, which become more pronounced with an increasing Knudsen number, suggesting that the Knudsen number should not exceed 0.3 when designing hydrophobic microstructures.

投稿的翻译标题Study on slip velocity characteristics of microscale concave flow over hydrophobic materials
源语言繁体中文
页(从-至)108-116
页数9
期刊Kongqi Donglixue Xuebao/Acta Aerodynamica Sinica
42
7
DOI
出版状态已出版 - 7月 2024

关键词

  • DUGKS
  • hydrophobic material
  • microscale
  • slip velocity characteristics
  • vortex characteristics

指纹

探究 '疏水材料微尺度凹坑流滑移速度特性研究' 的科研主题。它们共同构成独一无二的指纹。

引用此