| 带凹槽平板型声透镜聚焦性能的理论分析与数值模拟 |
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| 引用本文： | 王柄霖,龚季伟,赵明远,张亨宇,余同普. 带凹槽平板型声透镜聚焦性能的理论分析与数值模拟[J]. 声学技术, 2018, 37(1): 1-5 |
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| 作者姓名： | 王柄霖 龚季伟 赵明远 张亨宇 余同普 |
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| 作者单位： | 国防科学技术大学理学院; |
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| 基金项目： | 国家自然科学基金面上项目（11474360），国防科技大学科研项目“杰出青年基金”（JC14-02-02） |
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| 摘 要： | 基于相位补偿和惠更斯-菲涅尔原理,利用理论分析和数值模拟的方法,研究了一种带凹槽的平板型声透镜,讨论了凹槽个数、声透镜材料等参数对声透镜聚焦性能的影响。结果表明:优化后的菲涅尔声透镜聚声效率理论上可达40%,放大倍数约为7倍,是一种较为高效、成本低廉的新型声透镜。
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| 关 键 词： | 菲涅尔声透镜 平板型声透镜 放大率 |
| 收稿时间： | 2017-01-16 |
| 修稿时间： | 2017-04-23 |
Theoretical analysis and numerical simulation on the performance of a flat-type acoustic lens with fluted rings |
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| WANG Bing-lin,GONG Ji-wei,ZHAO Ming-yuan,ZHANG Heng-yu and YU Tong-pu. Theoretical analysis and numerical simulation on the performance of a flat-type acoustic lens with fluted rings[J]. Technical Acoustics, 2018, 37(1): 1-5 |
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| Authors: | WANG Bing-lin GONG Ji-wei ZHAO Ming-yuan ZHANG Heng-yu YU Tong-pu |
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| Affiliation: | College of Science, National University of Defense Technology, Changsha 410073, Hu''nan, China,College of Science, National University of Defense Technology, Changsha 410073, Hu''nan, China,College of Science, National University of Defense Technology, Changsha 410073, Hu''nan, China,College of Science, National University of Defense Technology, Changsha 410073, Hu''nan, China and College of Science, National University of Defense Technology, Changsha 410073, Hu''nan, China |
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| Abstract: | Based on phase compensation and Huygens-Fresnel principle, a flat-type acoustic lens with fluted rings is proposed and researched by using theoretical analysis and numerical simulation. The influences of various factors such as the number of grooves and the materials during the manufacturing process on the performances of the lens are discussed. The results show that the efficiency of the optimized Fresnel lens can be up to 40% with a magnification of about seven times, making it a potential candidate of high efficiency and low-cost acoustic lens. |
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| Keywords: | acoustic Fresnel lens flat-type acoustic lens magnification rate |
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