哈尔滨工程大学学报2024，Vol.45Issue(1)：93-102,10.DOI:10.11990/jheu.202206042
水下声学超表面异常折射方向调控研究
Research on the regulation of abnormal refraction direction of underwater acoustic metasurface
摘要
Abstract
In this study,an acoustic metasurface controlling the wavefront phase was designed to regulate the beam.Based on the generalized Snell law,a multifrequency underwater acoustic metasurface model was constructed using hom-ogeneous media with different sound velocities,which yielded the basic principle of abnormal acoustic refraction pro-duced by the acoustic metasurface,verified that the acoustic metasurface can realize abnormal acoustic refraction at mul-tiple frequency points,and revealed the influence of the frequency and incident angle of sound waves on the abnormal refraction of an acoustic metasurface.A physical acoustic metasurface was prepared in a water tank to verify the theoreti-cal results.The results showed that when the frequency of an incident wave is an integer multiple of the fundamental frequency,a metasurface model can realize the abnormal refraction phenomenon with the same refraction angle,and a negative refraction phenomenon can be realized within a certain range of the incident angle.The refractions of the under-water steel plates and the metasurface were measured through experiments.Compared with homogeneous media,all metasurfaces designed at different incident angles can achieve anomalous refraction,and the measured values are in good agreement with the theoretical values.关键词
水下/声学超表面/异常折射/负折射/梯度相位/广义斯奈尔定律/多角度/消声水箱Key words
underwater/acoustic metasurface/abnormal refraction/negative refraction/gradient phase/generalized Snell law/multiangle/anechoic water tank分类
数理科学引用本文复制引用
胡博,刘凯,赵思缘,李松..水下声学超表面异常折射方向调控研究[J].哈尔滨工程大学学报,2024,45(1):93-102,10.基金项目
国家自然科学基金项目(52250344,52171333,52271342) （52250344,52171333,52271342）
领军人才团队建设项目(3072022FSC0501) （3072022FSC0501）
湛江市创新创业团队引育"领航计划"项目(211207157080994). （211207157080994）
