4.7 Article

Cavitating flows in microchannel with rough wall using a modified microscale cavitation model

期刊

出版社

ELSEVIER
DOI: 10.1016/j.csite.2023.103735

关键词

Microchannel with restrictor; Micro-scale cavitation; Scale effect; Thermal effect; Surface roughness

向作者/读者索取更多资源

A modified cavitation model for micro-scale flow is proposed and verified in this study. The impact of surface roughness on cavitation flow is investigated.
Cavitation can induce drastic disruption and significantly enhance heat transfer, especially in microchannels. However, due to the scale effect, the cavitation characteristics in micro-scale can be significantly different from those in conventional scale. A modified cavitation model according to the Rayleigh-Plesset bubble kinetic equation is formulated by including the effects of surface tension, and temperature difference between the local environment and the far-field environment. The impacts of latent heat of vaporization and condensation are introduced into the energy equation. The micro-scale cavitation model proposed in the paper is verified through comparison with experimental data. The influence of surface roughness on cavitation flow in microchannel with restrictor is then investigated. The results demonstrate that bottom surface roughness in microchannels significantly increases flow resistance, suppresses cavitation flow and causes high frequency pressure fluctuations.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据