| 韩宝坤,魏国,孙晓东,鲍怀谦,常胜,刘泽坤.某型往复式制冷压缩机吸/排气噪声源在自由场中的辐射特性研究[J].声学技术,2020,39(6):710~714 |
| 某型往复式制冷压缩机吸/排气噪声源在自由场中的辐射特性研究 |
| Research on noise radiation characteristics of suction and exhaust of some reciprocating refrigeration compressor |
| 投稿时间：2019-07-04 修订日期：2019-08-17 |
| DOI：10.16300/j.cnki.1000-3630.2020.06.010 |
| 中文关键词: 往复式压缩机 排气噪声 辐射特性 偶极子声源 四极子声源 |
| 英文关键词: reciprocating compressor exhaust noise radiation characteristics dipole sound source quadrupole sound source |
| 基金项目:山东省重点研发计划项目(2017GGX40120)。 |
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| 中文摘要: |
| 往复式制冷压缩机在制冷冰箱领域广泛应用,是产生噪声的源头。为了研究往复式压缩机的噪声特性,首先通过对工作过程中的吸/排气流场特性进行了数值模拟,将流场声源信息导入声学软件LMS Virtual.Lab中,基于喷射噪声理论对壁面压力脉动引起的偶极子声源和湍流四极子声源在排气过程中的变化规律及辐射特性进行研究,最后得到压缩机吸/排气噪声辐射指向性。为实现低噪声制冷压缩机的研制提供了理论依据。 |
| 英文摘要: |
| Reciprocating refrigeration compressor is widely used in refrigeratory industry, and it is the source of noise. In order to study the noise characteristics of reciprocating compressor, the characteristics of suction and exhaust flow field in the working process are numerically simulated. The sound source information of flow field is imported into the acoustic software LMS Virtual. Lab. Based on the jet noise theory, the dipole sound source and turbulent quadrupole sound source caused by wall pressure fluctuation are analyzed in the exhaust process. The variation law and radiation characteristics are studied. Finally, the radiation directivity of suction and exhaust noise of compressor is obtained. This study provides a theoretical basis for the development of low noise refrigeration compressor. |
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