Construction of acoustic model and simulation of sound absorption of aero-engine composite acoustic liner
Acoustic liner is an important component to reduce engine noise. In this work, the modal sound source characteristics of the pipeline under different flow fields were calculated and used as the input boundary for the background flow field calculation and sound propagation calculation of the Actran s...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Journal of Aeronautical Materials
2023-10-01
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| Series: | Journal of Aeronautical Materials |
| Subjects: | |
| Online Access: | http://jam.biam.ac.cn/article/doi/10.11868/j.issn.1005-5053.2022.000151 |
| _version_ | 1797663563865653248 |
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| author | YANG Zhiyong HOU Peng JIANG Wenge YANG Lei ZUO Xiaobiao GENG Dongbing ZHU Zhongzheng LI Hua |
| author_facet | YANG Zhiyong HOU Peng JIANG Wenge YANG Lei ZUO Xiaobiao GENG Dongbing ZHU Zhongzheng LI Hua |
| author_sort | YANG Zhiyong |
| collection | DOAJ |
| description | Acoustic liner is an important component to reduce engine noise. In this work, the modal sound source characteristics of the pipeline under different flow fields were calculated and used as the input boundary for the background flow field calculation and sound propagation calculation of the Actran software, thereby establishing the sound propagation model. The influences of four structural parameters on the sound absorption effect of the muffler plate hole diameter, hole spacing, honeycomb height, and muffler plate thickness in the single-DOF acoustic liner and the double-DOF acoustic liner were studied respectively. The simulation results show that both degrees of freedom acoustic liners exhibit the phenomenon that the smaller the perforation diameter, the better the sound absorption performance within a certain range of hole diameter. The effects of hole spacing, honeycomb height, and muffler thickness on the sound absorption performance are varied with frequency, the double-DOF acoustic liner above 2500 Hz has large dissipation power and good sound absorption effect. Through the contrast verification in the flow tube test, the transmission loss of the acoustic liner of different structures under different excitation sources is compared, and a reasonable and credible simulation method is obtained. |
| first_indexed | 2024-03-11T19:16:30Z |
| format | Article |
| id | doaj.art-c6478bb289924e7b807654df8fc36677 |
| institution | Directory Open Access Journal |
| issn | 1005-5053 |
| language | zho |
| last_indexed | 2024-03-11T19:16:30Z |
| publishDate | 2023-10-01 |
| publisher | Journal of Aeronautical Materials |
| record_format | Article |
| series | Journal of Aeronautical Materials |
| spelling | doaj.art-c6478bb289924e7b807654df8fc366772023-10-09T08:50:06ZzhoJournal of Aeronautical MaterialsJournal of Aeronautical Materials1005-50532023-10-01435849610.11868/j.issn.1005-5053.2022.000151a2022-0151Construction of acoustic model and simulation of sound absorption of aero-engine composite acoustic linerYANG Zhiyong0HOU Peng1JIANG Wenge2YANG Lei3ZUO Xiaobiao4GENG Dongbing5ZHU Zhongzheng6LI Hua7Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, ChinaShenyang Engine Research Institute, Shenyang 110015, ChinaAerospace Research Institute of Materials & Processing Technology, Beijing 100076, ChinaSchool of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaAerospace Research Institute of Materials & Processing Technology, Beijing 100076, ChinaAerospace Research Institute of Materials & Processing Technology, Beijing 100076, ChinaSchool of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaSchool of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaAcoustic liner is an important component to reduce engine noise. In this work, the modal sound source characteristics of the pipeline under different flow fields were calculated and used as the input boundary for the background flow field calculation and sound propagation calculation of the Actran software, thereby establishing the sound propagation model. The influences of four structural parameters on the sound absorption effect of the muffler plate hole diameter, hole spacing, honeycomb height, and muffler plate thickness in the single-DOF acoustic liner and the double-DOF acoustic liner were studied respectively. The simulation results show that both degrees of freedom acoustic liners exhibit the phenomenon that the smaller the perforation diameter, the better the sound absorption performance within a certain range of hole diameter. The effects of hole spacing, honeycomb height, and muffler thickness on the sound absorption performance are varied with frequency, the double-DOF acoustic liner above 2500 Hz has large dissipation power and good sound absorption effect. Through the contrast verification in the flow tube test, the transmission loss of the acoustic liner of different structures under different excitation sources is compared, and a reasonable and credible simulation method is obtained.http://jam.biam.ac.cn/article/doi/10.11868/j.issn.1005-5053.2022.000151acoustic linersingle-dofdouble-dofnoise reduction amount |
| spellingShingle | YANG Zhiyong HOU Peng JIANG Wenge YANG Lei ZUO Xiaobiao GENG Dongbing ZHU Zhongzheng LI Hua Construction of acoustic model and simulation of sound absorption of aero-engine composite acoustic liner Journal of Aeronautical Materials acoustic liner single-dof double-dof noise reduction amount |
| title | Construction of acoustic model and simulation of sound absorption of aero-engine composite acoustic liner |
| title_full | Construction of acoustic model and simulation of sound absorption of aero-engine composite acoustic liner |
| title_fullStr | Construction of acoustic model and simulation of sound absorption of aero-engine composite acoustic liner |
| title_full_unstemmed | Construction of acoustic model and simulation of sound absorption of aero-engine composite acoustic liner |
| title_short | Construction of acoustic model and simulation of sound absorption of aero-engine composite acoustic liner |
| title_sort | construction of acoustic model and simulation of sound absorption of aero engine composite acoustic liner |
| topic | acoustic liner single-dof double-dof noise reduction amount |
| url | http://jam.biam.ac.cn/article/doi/10.11868/j.issn.1005-5053.2022.000151 |
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