MATEC Web Conf.
Volume 283, 2019The 2nd Franco-Chinese Acoustic Conference (FCAC 2018)
|Number of page(s)||5|
|Section||Vibroacoustics and Noise Reduction|
|Published online||28 June 2019|
Numerical study of a control scheme on flow-induced cavity noise
1 National Key Laboratory on Ship Vibration &Noise, Wuxi, 214000, China
2 China Ship Scientific Research Center, Wuxi, 214000, China
* Corresponding author: LL300100@aliyun.com
A numerical procedure for flow induced cavity noise is established in the paper. The procedure is based on large eddy simulation and FW-H acoustic analogy. The computational scheme is validated by comparing with experimental data. The change of flow induced noise along with cavity length, cavity depth and velocity is studied. A noise control scheme, which includes upright grille and oblique grille, is designed for reducing the flow-induced cavity noise. It turns out that the oblique grille shows superiority in the reduction of cavity noise by modifying the flow structure of the sheat layer.
© The Authors, published by EDP Sciences, 2019
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