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Citation:
　Hongyang Chen,Qi Li and Dejiang Shang.Fast Prediction of Acoustic Radiation from a Hemi-capped Cylindrical Shell in Waveguide[J].Journal of Marine Science and Application,2014,(4):437-448.[doi:10.1007/s11804-014-1270-x]
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Fast Prediction of Acoustic Radiation from a Hemi-capped Cylindrical Shell in Waveguide

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Title:
Fast Prediction of Acoustic Radiation from a Hemi-capped Cylindrical Shell in Waveguide
Author(s):
Hongyang Chen;  Qi Li and Dejiang Shang
Affilations:
Author(s):
Hongyang Chen;  Qi Li and Dejiang Shang
1. National Key Laboratory on Ship Vibration & Noise, China Ship Development and Design Center, Wuhan 430064, China2. Underwater Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China
Keywords:
acoustic radiation;  hemi-capped cylindrical shell;  fast prediction;  half-space;  waveguide;  wave superposition;  Green’s function;  sound propagation algorithm
分类号:
-
DOI:
10.1007/s11804-014-1270-x
Abstract:
In order to predict acoustic radiation from a structure in waveguide, a method based on wave superposition is proposed, in which the free-space Green’s function is used to match the strength of equivalent sources. In addition, in order to neglect the effect of sound reflection from boundaries, necessary treatment is conducted, which makes the method more efficient. Moreover, this method is combined with the sound propagation algorithms to predict the sound radiated from a cylindrical shell in waveguide. Numerical simulations show the effect of how reflections can be neglected if the distance between the structure and the boundary exceeds the maximum linear dimension of the structure. It also shows that the reflection from the bottom of the waveguide can be approximated by plane wave conditionally. The proposed method is more robust and efficient in computation, which can be used to predict the acoustic radiation in waveguide.

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Memo

Memo:
Supported by the National Natural Science Foundation of China under Grant No. 11274080, and the Young Scientists Fund of the National Natural Science Foundation of China under Grant No. 11404313.
Last Update: 2014-12-09