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Volume 4, Issue 1
Estimation of Optimal Acoustic Liner Impedance Factor for Reduction of Radiated Engine Noise

Y. Cao, M. Y. Hussaini & H. Yang

Int. J. Numer. Anal. Mod., 4 (2007), pp. 116-126.

Published online: 2007-04

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  • Abstract

We study the optimal design problem of acoustic liner to minimize fan noise radiation from commercial aircraft engine nacelles. Specifically we treat the liner impedance factor as a parameter and seek to estimate its optimal value that minimizes far-field radiated noise. The existence of such an optimal parameter is proved under the assumption that the Helmholtz equation governs the noise field. We also present numerical results to demonstrate that the choice of the optimal liner impedance factor does result in significant reduction of noise level in the far-field.

  • Keywords

liner impedance factor, the Helmholtz equation, optimization problem.

  • AMS Subject Headings

49J20, 58E25, 65K10, 65M60

  • Copyright

COPYRIGHT: © Global Science Press

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@Article{IJNAM-4-116, author = {}, title = {Estimation of Optimal Acoustic Liner Impedance Factor for Reduction of Radiated Engine Noise}, journal = {International Journal of Numerical Analysis and Modeling}, year = {2007}, volume = {4}, number = {1}, pages = {116--126}, abstract = {

We study the optimal design problem of acoustic liner to minimize fan noise radiation from commercial aircraft engine nacelles. Specifically we treat the liner impedance factor as a parameter and seek to estimate its optimal value that minimizes far-field radiated noise. The existence of such an optimal parameter is proved under the assumption that the Helmholtz equation governs the noise field. We also present numerical results to demonstrate that the choice of the optimal liner impedance factor does result in significant reduction of noise level in the far-field.

}, issn = {2617-8710}, doi = {https://doi.org/}, url = {http://global-sci.org/intro/article_detail/ijnam/854.html} }
TY - JOUR T1 - Estimation of Optimal Acoustic Liner Impedance Factor for Reduction of Radiated Engine Noise JO - International Journal of Numerical Analysis and Modeling VL - 1 SP - 116 EP - 126 PY - 2007 DA - 2007/04 SN - 4 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/ijnam/854.html KW - liner impedance factor, the Helmholtz equation, optimization problem. AB -

We study the optimal design problem of acoustic liner to minimize fan noise radiation from commercial aircraft engine nacelles. Specifically we treat the liner impedance factor as a parameter and seek to estimate its optimal value that minimizes far-field radiated noise. The existence of such an optimal parameter is proved under the assumption that the Helmholtz equation governs the noise field. We also present numerical results to demonstrate that the choice of the optimal liner impedance factor does result in significant reduction of noise level in the far-field.

Y. Cao, M. Y. Hussaini & H. Yang. (1970). Estimation of Optimal Acoustic Liner Impedance Factor for Reduction of Radiated Engine Noise. International Journal of Numerical Analysis and Modeling. 4 (1). 116-126. doi:
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