|
《Analysis of Acoustic Characteristics for Expansion chamber Muffler Using Finite Element Method》
LIU Fei;LU Sen-lin;LIU Hong-guang;Wang Jing
2010, 30 (3):
144-147.
DOI: 10.3969/j.issn.1006-1355.2010.03.038
The finite element method is used to analyze the acoustic characteristics of an expansionchamber muffler with its inlet and outlet pipes being coaxial. Its transmission loss (TL) is calculated. The result is compared with that of the onedimensional solutions based on planar wave theory. The limitation of onedimensional planar wave theory is discussed. The acoustic characteristics of eccentric outlet muffler, doubleoutlet muffler and doublecavity muffler are analyzed. The result indicates that the position and the number of outlet can affect the acoustic characteristic of a muffler for higher and medium frequencies; while the doublecavity muffler has high noiseelimination efficiency for lower and medium frequencies.
Related Articles |
Metrics
|
