In this article, we have first presented a metasurface design methodology by coupling the acoustic cavity to the coiled channel. The geometrical design parameters in this structure are subsequently studied both analytically and numerically to identify a road map for silencer design. Next, upon tuning the design parameters, we have introduced an air-permeable noise barrier capable of sound silencing in the ultrawide band of the frequency. It is has been shown that the presented metasurface can achieve +10 dB sound transmission loss from 170 Hz to 1330 Hz (≈3 octaves). Furthermore, we have numerically studied the ventilation and heat transfer performance of the designed metasurface. Enabling noise mitigation by leveraging the proposed metasurface opens up new possibilities ranging from residential and office noise reduction to enabling ultralow noise fan, propellers, and machinery.

在本文中，我们首先介绍了通过将声腔耦合到盘绕通道来实现超表面设计的方法。随后对该结构中的几何设计参数进行分析和数值研究，以确定消音器设计的路线图。接下来，在调整设计参数时，我们引入了一种透气隔音屏障，该隔音屏障能够在该频率的超宽频带内使声音静音。已经表明，所提出的超颖表面可以在170 Hz至1330 Hz（≈3个八度音程）内实现+10 dB的声音传输损耗。此外，我们对设计的超颖表面的通风和传热性能进行了数值研究。