A Metawindow with Optimised Acoustic and Ventilation Performance

Applied Sciences

Gioia Fusaro¹  Jian Kang²  Xiang Yu³  Fangsen Cui³  Zhenbo Lu⁴ 

[1] Acoustics Group, School of Architecture, University of Sheffield, Sheffield S10 2TN, UK;Institute for Environmental Design and Engineering (IEDE), The Bartlett, University College London, London WC1H 0NN, UK;Institute of High Performance Computing, A*Star, Singapore 138632, Singapore;Shenzhen Campus, School of Aeronautics and Astronautics, Sun Yat-Sen University, Shenzhen 518107, China;

关键词: acoustic metamaterial;    ventilation window;    finite element method;    outdoor noise control;    ergonomic design;   

DOI  :  10.3390/app11073168

来源: DOAJ

【 摘 要 】

Crucial factors in window performance, such as natural ventilation and noise control, are generally conceived separately, forcing users to choose one over the other. To solve this dualism, this study aimed to develop an acoustic metamaterial (AMM) ergonomic window design to allow noise control without dependence on the natural ventilation duration and vice versa. First, the finite element method (FEM) was used to investigate the noise control performance of the acoustic metawindow (AMW) unit, followed by anechoic chamber testing, which also served as the validation of the FEM models. Furthermore, FEM analysis was used to optimise the acoustic performance and assess the ventilation potential. The numerical and experimental results exhibited an overall mean sound reduction of 15 dB within a bandwidth of 380 to 5000 Hz. A good agreement between the measured and numerical results was obtained, with a mean variation of 30%. Therefore, the AMW unit optimised acoustic performance, resulting in a higher noise reduction, especially from 50 to 500 Hz. Finally, most of the AMW unit configurations are suitable for natural ventilation, and a dynamic tuned ventilation capacity can be achieved for particular ranges by adjusting the window’s ventilation opening. The proposed designs have potential applications in building acoustics and engineering where natural ventilation and noise mitigation are required to meet regulations simultaneously.

【 授权许可】

Unknown