Abstract
Variable area concentric-tube-resonator mufflers may be used effectively for attenuating the odd harmonics. This ensures a broad-band transmission loss (TL) spectrum. In this paper, configurations that consist of variable area resonators within a uniform area muffler shell for enhancing the low-frequency noise attenuation are investigated. The variable area resonator elements within a muffler allow multiple elements, where the sum of their acoustic lengths is more than the geometric length of the muffler. This shifts the overall TL spectrum toward lower frequency. The underlying idea of incorporating the extended inlets and outlets in these resonators, is to reproduce the broadband attenuation. It has the effectiveness of dissipative ducts without the use of any absorptive materials. The results have been validated by means of three-dimensional finite element analysis.
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 callDisclaimer: 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.
