Numerical Investigation of Distributed Speed Feedback Control of Turbulent Boundary Layer Excitation Curved Plates Radiation Noise
The control of decentralized velocity feedback on curved aircraft plates under turbulent boundary layer excitations is numerically investigated in this paper. Sixteen active control units are set on the plate to reduce the vibration and sound radiation of the plate. The computational results from th...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Acoustics |
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| Online Access: | https://www.mdpi.com/2624-599X/5/2/24 |
| _version_ | 1797596624081387520 |
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| author | Dapeng Wei Bilong Liu Ludi Kang |
| author_facet | Dapeng Wei Bilong Liu Ludi Kang |
| author_sort | Dapeng Wei |
| collection | DOAJ |
| description | The control of decentralized velocity feedback on curved aircraft plates under turbulent boundary layer excitations is numerically investigated in this paper. Sixteen active control units are set on the plate to reduce the vibration and sound radiation of the plate. The computational results from the two methods are compared to verify the accuracy of the numerical model. The plate kinetic energy and the radiated sound power under turbulent boundary layer and control unit excitations are analyzed. The influences of control unit distribution, plate thickness and curvature on radiated sound are discussed. Unlike a flat plate, the control of the lower-order high radiation modes of a curved plate under TBL excitations is critical since these modes predominate the sound radiations. The control of these modes, however, is sensitive to the ratio of the stiffness associated with the membrane tensions to the stiffness associated with the bending forces. This ratio implies that the plate curvature and the thickness play an important role in the control effect. When the plate is thinner and the radius is smaller, the control is less effective. |
| first_indexed | 2024-03-11T02:53:46Z |
| format | Article |
| id | doaj.art-6805bf0b2eeb4e1a9b70e3339b5fd3fc |
| institution | Directory Open Access Journal |
| issn | 2624-599X |
| language | English |
| last_indexed | 2024-03-11T02:53:46Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Acoustics |
| spelling | doaj.art-6805bf0b2eeb4e1a9b70e3339b5fd3fc2023-11-18T08:48:16ZengMDPI AGAcoustics2624-599X2023-04-015241442810.3390/acoustics5020024Numerical Investigation of Distributed Speed Feedback Control of Turbulent Boundary Layer Excitation Curved Plates Radiation NoiseDapeng Wei0Bilong Liu1Ludi Kang2School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao 266520, ChinaSchool of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao 266520, ChinaSchool of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao 266520, ChinaThe control of decentralized velocity feedback on curved aircraft plates under turbulent boundary layer excitations is numerically investigated in this paper. Sixteen active control units are set on the plate to reduce the vibration and sound radiation of the plate. The computational results from the two methods are compared to verify the accuracy of the numerical model. The plate kinetic energy and the radiated sound power under turbulent boundary layer and control unit excitations are analyzed. The influences of control unit distribution, plate thickness and curvature on radiated sound are discussed. Unlike a flat plate, the control of the lower-order high radiation modes of a curved plate under TBL excitations is critical since these modes predominate the sound radiations. The control of these modes, however, is sensitive to the ratio of the stiffness associated with the membrane tensions to the stiffness associated with the bending forces. This ratio implies that the plate curvature and the thickness play an important role in the control effect. When the plate is thinner and the radius is smaller, the control is less effective.https://www.mdpi.com/2624-599X/5/2/24velocity feedbackturbulent boundary layercurved plate |
| spellingShingle | Dapeng Wei Bilong Liu Ludi Kang Numerical Investigation of Distributed Speed Feedback Control of Turbulent Boundary Layer Excitation Curved Plates Radiation Noise Acoustics velocity feedback turbulent boundary layer curved plate |
| title | Numerical Investigation of Distributed Speed Feedback Control of Turbulent Boundary Layer Excitation Curved Plates Radiation Noise |
| title_full | Numerical Investigation of Distributed Speed Feedback Control of Turbulent Boundary Layer Excitation Curved Plates Radiation Noise |
| title_fullStr | Numerical Investigation of Distributed Speed Feedback Control of Turbulent Boundary Layer Excitation Curved Plates Radiation Noise |
| title_full_unstemmed | Numerical Investigation of Distributed Speed Feedback Control of Turbulent Boundary Layer Excitation Curved Plates Radiation Noise |
| title_short | Numerical Investigation of Distributed Speed Feedback Control of Turbulent Boundary Layer Excitation Curved Plates Radiation Noise |
| title_sort | numerical investigation of distributed speed feedback control of turbulent boundary layer excitation curved plates radiation noise |
| topic | velocity feedback turbulent boundary layer curved plate |
| url | https://www.mdpi.com/2624-599X/5/2/24 |
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