Search

Article

x

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

Broadband acoustic focusing effect based on temperature gradient distribution

Liu Chen Sun Hong-Xiang Yuan Shou-Qi Xia Jian-Ping

Broadband acoustic focusing effect based on temperature gradient distribution

Liu Chen, Sun Hong-Xiang, Yuan Shou-Qi, Xia Jian-Ping
PDF
Get Citation

(PLEASE TRANSLATE TO ENGLISH

BY GOOGLE TRANSLATE IF NEEDED.)

Metrics
  • Abstract views:  1032
  • PDF Downloads:  163
  • Cited By: 0
Publishing process
  • Received Date:  26 August 2015
  • Accepted Date:  02 December 2015
  • Published Online:  05 February 2016

Broadband acoustic focusing effect based on temperature gradient distribution

    Corresponding author: Sun Hong-Xiang, jsdxshx@ujs.edu.cn;Shouqiy@ujs.edu.cn
    Corresponding author: Yuan Shou-Qi, jsdxshx@ujs.edu.cn;Shouqiy@ujs.edu.cn
  • 1. Faculty of Science, Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China;
  • 2. State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China
Fund Project:  Project supported by the Major Program of the National Natural Science Foundation of China (Grant No. 51239005), the National Natural Science Foundation of China (Grant No. 11404147), the Natural Science Foundation of Jiangsu Province of China (Grant No. BK20140519), the China Postdoctoral Science Foundation (Grant No. 2015M571672), the Research Fund for Advanced Talents of Jiangsu University, China (Grant No. 13JDG106), the Training Project of Young Backbone Teachers of Jiangsu University, and the Practice Innovation Training Program Projects for Jiangsu College Students, China (Grant No. 201510299047Y) and for Industrial Center of Jiangsu University.

Abstract: Acoustic focusing effect with broad bandwidth based on the temperature gradient distribution is studied. The propagation paths of the acoustic waves can be controlled by the temperature gradient distribution generated by two heat sources, which is adopted to realize the acoustic focusing effect. This focusing effect arises from the continuous change of the acoustic refractive index induced by the change of temperature, and has no reflection energy loss. Therefore, the acoustic focusing effect has the advantages of broad bandwidth and high focusing performance. In addition, we have investigated the influences of the factors (incident frequency, temperature of heat source, spatial distribution of interface, position of heat source, attenuation coefficient of the medium, and asymmetric distribution of heat source temperature) on the acoustic focusing effect in detail, and verified the feasibility of the acoustic focusing system by using aerogel based on temperature gradient distribution in single medium.

Reference (22)

Catalog

    /

    返回文章
    返回