DOI码：10.1063/5.0168740
发表刊物：Applied Physics Letters
摘要：Roughness is a key property of an acoustic metasurface in determining the laminar-to-turbulent transition of a supersonic boundary layer, and the investigation of its effects requires consideration of the real microstructures inside the metasurface without any simplification. This work experimentally studies the transition behavior of the boundary layers over four different metasurfaces in a supersonic low-noise wind tunnel. Using a nanoparticle-based planar laser scattering technique and an intermittency factor analysis, it is found that the rough metasurfaces considered here tend to increase the probability of boundary layer transition more than a smooth flat plate. It is also found that the roughness of a metasurface as represented by its longitudinal scale is positively correlated with the turbulence onset probability and exhibits an interesting linear trend.
合写作者：Rui Yang, Yongyi Zhou, Yuxin Zhao
第一作者：Lican Wang
论文类型：期刊论文
通讯作者：Yilong Zhao
学科门类：工学
一级学科：航空宇航科学与技术
文献类型：J
卷号：123
期号：141701
页面范围：1-6
是否译文：否
发表时间：2023-10-02