耦合Galerkin简正波解的抛物方程方法水下声传播计算
The coupled mode-parabolic equation method with Galerkin’s mode solution for the underwater sound propagation
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摘要: 研究水平变化的海洋环境下声传播的计算方法.把Galerkin方法的简正波解应用于耦合简正波抛物方程,可同时考虑海水和海底声场计算,对水平变化的海洋环境问题的数值计算表明,在包含海水和海底的声场计算中该方法的计算结果都具有较高的精度.
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关键词:
- Galerkin方法 /
- 简正波 /
- 耦合简正波抛物方程方法
Abstract: A method of sound propagation in a range-dependent underwater environment is presented. This method is based on the coupled mode-parabolic equation method(CMPE) and the normal mode solution is carried out with the aid of Galerkin's method. The sound fields both in water volume and sediment are predicted. The numerical examples are given to illustrate the accuracy of CMPE with Galerkin's mode solution.-
Key words:
- Galerkin’s method /
- normal mode /
- coupled mode-parabolic equation method
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PAUL C Etter.水声建模与仿真[M].第3版.蔡志明等译.北京:电子工业出版社,2005. ABAWI A T,KUPENNAN W A,COLLINS M D.The coupled mode parabolic equation[J].Acoust Soc Am,1997,102(1):233-238. JENSEN F B,KUPENNAN W A,PORTER M B,et al.Computational Ocean Acoustics[M].New York:A1P Press,1993. 彭朝晖,李风华.基于WKBZ理论的耦合简正波-抛物方程理论[J].中国科学(A辑),2001,31(2):165-172. EVANS R B.A coupled mode solution for acoustic propagation in a waveguide with stepwise depth variations of a penetrable bottom[J].J Acoust Soc Am,1983,74(1):188-195. EVANS R B,GILBERT K E.Acoustic propagation in an refracting ocean waveguide with an irregular interface[J].Comp Maths Appl,1985,11:795-805. -
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