Transmission loss analysis of rectangular expansion chamber with arbitrary location of inlet/outlet by means of Green's functions

Venkatesham, B; Tiwari, Mayank; Munjal, ML

doi:10.1016/j.jsv.2009.01.035

Cited by 25 publications

(7 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This assumption was justified if the sizes of the inlet and outlet ports were small compared to wavelength. 21 By comparing the transmission loss calculated by the Green's function method and by the modal expansion method, 13 the validity of the Green's function method is confirmed. Finally, experimental measurements on this proposed acoustical waveguide structure are made.…”

Section: Introductionmentioning

confidence: 89%

Acoustic attenuation performance through a constricted duct improved by an annular resonator

Feng

Huang

et al. 2013

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

Acoustic attenuation performance through a constricted duct is greatly improved by an annular resonator. A method based on the Green's function for a semi-infinite circular duct is proposed to calculate the transmission loss, where the velocity distributions are assumed to be uniform at the constriction inlet/outlets and at the inlet to the annular resonator. From an analogous acoustical circuit, the effect of higher order evanescent modes on the quarter-wave resonance is described by an extra length. The improved acoustic attenuation performance is also confirmed by an experiment.

show abstract

Section: Introductionmentioning

confidence: 89%

Acoustic attenuation performance through a constricted duct improved by an annular resonator

Feng

Huang

et al. 2013

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

show abstract

“…Therefore, the transfer matrix of each volume is obtained by pre-and post-multiplying the matrix in equation (10) by that in equation (11), giving:…”

Section: One-dimensional Analysismentioning

confidence: 99%

“…In this sense, by using analytical methods the computation time may be reduced without penalty in the accuracy of the results. A wide variety of papers study the analytical solution for the case of expansion chambers of rectangular [9,10], circular [11,12,13] and elliptical [14] cross-section. The major drawbacks of this approach are, on one hand, the complicated algebra involved and, on the other hand, the fact that analytical methods cannot be applied to geometries whose eigenfunctions are not readily known.…”

Section: Introductionmentioning

confidence: 99%

Analysis of acoustic networks including cavities by means of a linear finite volume method

Torregrosa

Broatch

Gil

et al. 2012

Journal of Sound and Vibration

View full text Add to dashboard Cite

A procedure allowing for the analysis of complex acoustic networks, including three-dimensional cavities described in terms of zero-dimensional equivalent elements, is presented and validated. The procedure is based on the linearization of the finite volume method often used in gas-dynamics, which is translated into an acoustic network comprising multi-ports accounting for mass exchanges between the finite volumes, and equivalent 2-ports describing momentum exchange across the volume surfaces. The application of the concept to a one-dimensional case shows that it actually converges to the exact analytical solution when a sufficiently large number of volumes are considered. This has allowed the formulation of an objective criterion for the choice of a mesh providing results with a prefixed error up to a certain Helmholtz number, which has been generalized to three-dimensional cases. The procedure is then applied to simple but relevant three-dimensional geometries in the absence of a mean flow, showing good agreement with experimental and other computational results.

show abstract

“…At present, the design of mufflers in many enterprises depends largely on the experience of engineers [5,6]. e performance of mufflers has been determined using experiments, but this method relies on the experience of engineers and is inefficient.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Experimental Study on the Transmission Loss of a Side Outlet Muffler

Zhang

Shi

Zeng

et al. 2020

Shock and Vibration

View full text Add to dashboard Cite

Vibration and noise reduction methods are important research directions in many industries. Mufflers are widely used in pipelines to reduce noise and vibration transmission. A theoretical analysis is conducted to determine the noise reduction mechanism of a muffler with a side outlet, and the results are verified with experiments. The quadrupole parameters of the muffler are obtained using transfer matrix analysis, and sensitivity analysis of the quadrupole parameters is conducted. The influence of the side outlet location on the transmission loss of the muffler is investigated experimentally using an impedance tube. The key factors affecting the transmission loss are analyzed. The theoretical calculation results of the transmission loss of the side outlet muffler are in good agreement with the experimental results.

show abstract

Transmission loss analysis of rectangular expansion chamber with arbitrary location of inlet/outlet by means of Green's functions

Cited by 25 publications

References 7 publications

Acoustic attenuation performance through a constricted duct improved by an annular resonator

Acoustic attenuation performance through a constricted duct improved by an annular resonator

Analysis of acoustic networks including cavities by means of a linear finite volume method

Theoretical and Experimental Study on the Transmission Loss of a Side Outlet Muffler

Contact Info

Product

Resources

About