| 环状活塞声源辐射声场指向性研究 |
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| 引用本文： | 任惠娟,贺西平,扈凤.环状活塞声源辐射声场指向性研究[J].陕西师范大学学报,2007,35(3):40-43. |
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| 作者姓名： | 任惠娟 贺西平 扈凤 |
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| 作者单位： | 陕西师范大学应用声学研究所 陕西西安710062 |
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| 摘 要： | 利用瑞利积分,计算了环状活塞声源辐射声场的远场声压分布和指向性函数,分析了影响辐射声源指向性的几个因素.结果表明,当环状活塞的尺寸一定时,辐射频率增大,辐射声场指向性增强;辐射频率和环宽一定时,随活塞内径增大,辐射声场指向性增强;辐射频率和内径一定时,随活塞外径增大,辐射声场指向性仍增强;辐射频率和外径一定时,随活塞内径增大,辐射声场指向性增强.这表明辐射声场的指向性与环宽无必然因果关系.
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| 关 键 词： | 环状活塞声源 辐射声场 指向特性 |
| 文章编号： | 1672-4291（2007）03-0040-04 |
| 修稿时间： | 2007-03-12 |
The directivity of acoustic field radiated from ring piston source |
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| REN Hui-juan,HE Xi-ping,HU Feng.The directivity of acoustic field radiated from ring piston source[J].Journal of Shaanxi Normal University: Nat Sci Ed,2007,35(3):40-43. |
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| Authors: | REN Hui-juan HE Xi-ping HU Feng |
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| Abstract: | The sound pressure distribution in the far field and the directivity function are calculated by using the Rayleigh equation.Several factors that affect the directivity are analyzed.The result shows that the directivity intensifies with the increases of each parameter of the ring piston under different conditions respectively.It is indicated that the directivity does not relate to the width of the ring piston. |
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| Keywords: | ring piston acoustic field directivity character |
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