用球谐分解近似计算辐射声功率。

IF 1.2 Q3 ACOUSTICS
Kristian Kvist, Sergey V Sorokin, Jan Balle Larsen
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引用次数: 0

摘要

本研究增强了“辐射效率随等效辐射功率变化”的近似。这是通过引入一种基于球谐分解的估算辐射效率的新方法来实现的。所提出的改进消除了计算昂贵的表面积分的需要,并且在求解时间上与经典的等效辐射功率近似相当。与亥姆霍兹方程的全数值解相比,在精度方面显著优于经典等效辐射功率。这是通过两个工业复杂系统的数值声学模型定量和定性地显示出来的。所提出的改进使该方法对不同网格密度的非凸几何图形具有鲁棒性,使该方法非常适合工业应用中的迭代声学分析。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Approximating radiated acoustic power by spherical harmonic decomposition.

This study enhances the approximation "radiation efficiency varying equivalent radiated power." This is done through introducing a new method for estimating radiation efficiencies, based on spherical harmonic decomposition. The proposed improvements eliminate the need for computationally expensive surface integrals and results in solution times comparable with the classical equivalent radiated power approximation. This is achieved while significantly outperforming classical equivalent radiated power in terms of accuracy when compared with full numerical solutions to Helmholtz equation. This is shown both quantitively and qualitatively through numerical acoustic models of two systems of industrial complexity. The proposed improvements make the method robust for non-convex geometries across varying mesh densities, making the method highly suitable for iterative acoustic analysis in industrial applications.

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CiteScore
1.70
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