Abstract
It is necessary to reduce the aerodynamic sound generated by fans since they are often used for air-conditioner, which are placed in human living areas, such as homes and offices. To reduce the aerodynamic sound, we focused on the Helmholtz resonator (HR). Toward developing HR that can be installed into air-conditioners and reduce aerodynamic sound, the present study investigated a numerical analysis method and the effect of cavity shapes on the sound reduction performance of HR using a simple computational model. As a numerical analysis method, we used the lattice Boltzmann method (LBM), which can simultaneously simulate aerodynamically sound generation in fans and the acoustic resonance in resonators. First, the capability of the LBM to simulate acoustic resonance was validated. As a result, it was shown that the calculation results were consistent with the theoretical equation. Furthermore, the present study revealed the relationship between the depth of the resonator cavity and the sound reduction effect.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: The Proceedings of the Fluids engineering conference
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
