[1]王健,吴军基,陶钢,等.射流低频高声强发生器设计与实验研究[J].南京理工大学学报(自然科学版),2009,(03):344-347.
 WANG Jian,WU Jun-ji,TAO Gang.Design and Experiment on Fluidic Low-frequency and High-intensity Sound Generator[J].Journal of Nanjing University of Science and Technology,2009,(03):344-347.
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射流低频高声强发生器设计与实验研究
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2009年03期
页码:
344-347
栏目:
出版日期:
2009-06-30

文章信息/Info

Title:
Design and Experiment on Fluidic Low-frequency and High-intensity Sound Generator
作者:
王健;吴军基;陶钢;
南京理工大学动力工程学院, 江苏南京210094
Author(s):
WANG JianWU Jun-jiTAO Gang
School of Power Engineering,NUST,Nanjing 210094,China
关键词:
声学发生器 射流 低频 高声强 气体动力学
Keywords:
acoustic generators fluidics low frequency high intensity sound gas dynamics
分类号:
TB534.1
摘要:
为解决现有低频高声强发生器声压低、装置复杂、声学性能可调性与重复性差等问题,设计了以压缩空气为能源、电机调谐的低频射流高声强发生器。按照气体动力学一维行波理论、守恒方程、伯努利方程与声学理论对其进行声学设计。按理想可压缩气体定常流流体动力学控制方程模型,采用三维结构化网格、压力耦合方程半隐式算法,计算得到流场的压力分布特性。为验证其声学特性,进行了现场发声测试试验。实验结果与设计值基本一致,验证了该低频高声强发生器具有50 Hz低声频、181dB高声强、声特性重复可调的特点,可以为噪声伤害、高声强声源工业
Abstract:
To solve the problems of the fluidic low-frequency and high-intensity sound generator,such as lower sound pressure,more complex equipments,worse acoustic character tune and repetition,a new low-frequency and high-intensity sound generator is designed.The generator is powered by compressed air and adjusted by electromotor.It is acoustically designed by one-dimensional traveling-wave theory of aerodynamics,conservation equations,Bernoulli’s equations and acoustic theory.Flow field’s pressure distribution character is obtained by computation fluid dynamics(CFD) controlled equations model of ideal-compressible-gas steady flow,structure mesh,semi-implicit method for pressure-linked equations(SIMPLE) algorithm.To validate its acoustic character,an on-site sound generation test is experimented.The test results and design values are consistent,which verifies that this low-frequency and high-intensity generator has 50 Hz low frequency,181 dB high intensity,repetitive and adjustable acoustic characteristics.The results offers test sound source for yawp hurt,high-intensity sound source industry appliance and acoustic weapons.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 南京理工大学科研发展基金( XKF05030)
作者简介: 王健( 1978- ), 男, 博士生, 讲师, 主要研究方向: 武器系统设计与仿真及终点弹道与高效毁伤, E-mail :genewang@ mail.njust. edu. cn;
通讯作者: 吴军基( 1955- ), 男, 教授, 博士生导师, 主要研究方向: 弹箭控制与测试, E-mail: wjj807@ 126. com。
更新日期/Last Update: 2012-11-19