The ratio of the sound pressure level at the exit to that at the entrance is minimized for a cylindrical straight lined duct of finite length carrying a uniform gas flow. The idea is to compute numerically this ratio for a large number of combinations of the values of the liner parameters (inertance, resistance, stiffness) and establish a formula for the dependence of the ratio on these parameters. By using this formula the minimum value of the ratio, as well the values of parameters, for which the minimum is obtained, are found numerically.
The sound attenuation coefficient optimization for a cylindrical straight lined duct of finite length
10TH INTERNATIONAL CONFERENCE ON MATHEMATICAL PROBLEMS IN ENGINEERING, AEROSPACE AND SCIENCES: ICNPAA 2014 ; 2014 ; Narvik, Norway
AIP Conference Proceedings ; 1637 , 1 ; 1355-1361
2014-12-10
7 pages
Conference paper
Electronic Resource
English
The sound attenuation coefficient optimization for an annular straight lined duct of finite length
American Institute of Physics | 2014
|American Institute of Physics | 2014
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