Numerical Study on Wind-Induced Noise of High-Rise Building Curtain Wall with Outside Shading Devices
Perforation metal plates with dense holes are often used as external curtain walls of high-rise buildings. When air flow passes through these holes at a high speed, complex vortex is generated and causes a significant issue of wind-induced noise. In this study, both Reynolds-averaged Navier–Stokes (...
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Wiley
2018-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2018/5840761 |
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| author | Wei Xu Feng Xu |
| author_facet | Wei Xu Feng Xu |
| author_sort | Wei Xu |
| collection | DOAJ |
| description | Perforation metal plates with dense holes are often used as external curtain walls of high-rise buildings. When air flow passes through these holes at a high speed, complex vortex is generated and causes a significant issue of wind-induced noise. In this study, both Reynolds-averaged Navier–Stokes (RANS) simulations and large-eddy simulations (LES) were conducted to study flow around high-rise buildings with an external sunshade curtain wall. First, wind speed distributions at the height of a typical level under 16 wind directions were acquired. Then, the maximum wind speed ratio and its corresponding azimuth were identified. Second, the sound pressure levels in the vicinity of the shading devices with two types of perforation plate schemes were calculated to evaluate the acoustic characteristics by using the FW-H equation to simulate sound generation and propagation. The results indicate that the maximum wind speed around the buildings exists at the building corners, and the maximum wind speed ratio is 2.8 observed at 0-degree wind direction. Under two different wind conditions, the aeroacoustic performance of perforation plate is enhanced with reducing end plate size and increasing aperture size. The overall sound pressure level (OSPL) and A-weighted sound pressure level (ASPL) around the shading devices are 80 dB and 68 dB(A), respectively, for the improved perforation plate scheme under the 1-year return period maximum speed, which are changed to 58dB and 45dB(A) under the annual average speed. Therefore, it is believed that perforation plates with small end plate size and large aperture size are desirable for the noise prevention design of shading devices. |
| format | Article |
| id | doaj-art-4a2648fbf1c0449b9735be01431588bb |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-4a2648fbf1c0449b9735be01431588bb2025-02-03T05:57:36ZengWileyShock and Vibration1070-96221875-92032018-01-01201810.1155/2018/58407615840761Numerical Study on Wind-Induced Noise of High-Rise Building Curtain Wall with Outside Shading DevicesWei Xu0Feng Xu1School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510006, ChinaSchool of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, ChinaPerforation metal plates with dense holes are often used as external curtain walls of high-rise buildings. When air flow passes through these holes at a high speed, complex vortex is generated and causes a significant issue of wind-induced noise. In this study, both Reynolds-averaged Navier–Stokes (RANS) simulations and large-eddy simulations (LES) were conducted to study flow around high-rise buildings with an external sunshade curtain wall. First, wind speed distributions at the height of a typical level under 16 wind directions were acquired. Then, the maximum wind speed ratio and its corresponding azimuth were identified. Second, the sound pressure levels in the vicinity of the shading devices with two types of perforation plate schemes were calculated to evaluate the acoustic characteristics by using the FW-H equation to simulate sound generation and propagation. The results indicate that the maximum wind speed around the buildings exists at the building corners, and the maximum wind speed ratio is 2.8 observed at 0-degree wind direction. Under two different wind conditions, the aeroacoustic performance of perforation plate is enhanced with reducing end plate size and increasing aperture size. The overall sound pressure level (OSPL) and A-weighted sound pressure level (ASPL) around the shading devices are 80 dB and 68 dB(A), respectively, for the improved perforation plate scheme under the 1-year return period maximum speed, which are changed to 58dB and 45dB(A) under the annual average speed. Therefore, it is believed that perforation plates with small end plate size and large aperture size are desirable for the noise prevention design of shading devices.http://dx.doi.org/10.1155/2018/5840761 |
| spellingShingle | Wei Xu Feng Xu Numerical Study on Wind-Induced Noise of High-Rise Building Curtain Wall with Outside Shading Devices Shock and Vibration |
| title | Numerical Study on Wind-Induced Noise of High-Rise Building Curtain Wall with Outside Shading Devices |
| title_full | Numerical Study on Wind-Induced Noise of High-Rise Building Curtain Wall with Outside Shading Devices |
| title_fullStr | Numerical Study on Wind-Induced Noise of High-Rise Building Curtain Wall with Outside Shading Devices |
| title_full_unstemmed | Numerical Study on Wind-Induced Noise of High-Rise Building Curtain Wall with Outside Shading Devices |
| title_short | Numerical Study on Wind-Induced Noise of High-Rise Building Curtain Wall with Outside Shading Devices |
| title_sort | numerical study on wind induced noise of high rise building curtain wall with outside shading devices |
| url | http://dx.doi.org/10.1155/2018/5840761 |
| work_keys_str_mv | AT weixu numericalstudyonwindinducednoiseofhighrisebuildingcurtainwallwithoutsideshadingdevices AT fengxu numericalstudyonwindinducednoiseofhighrisebuildingcurtainwallwithoutsideshadingdevices |