• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>AIAA Journal >Assessment of Time-Domain Equivalent Source Method for Acoustic Scattering
【24h】

Assessment of Time-Domain Equivalent Source Method for Acoustic Scattering

机译：时域等效源声散射方法的评估

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Equivalent source methods have been applied in the frequency and time domain to provide a fast and efficient computation for acoustic scattering. Although the advantages and capabilities of the method have been demonstrated, the limitations and drawbacks of the method have not yet been explored in detail. A detailed understanding of the equivalent source method is needed to use the method in a wide range of applications with more confidence. This paper presents an initial assessment of an application of the time-domain equivalent source method to the prediction of acoustic scattering. The sensitivity of the method to numerical parameters, including the number of the surface collocation points, the number and position of the equivalent sources, the time step, and the cutoff singular value, is investigated, and suggestions for these parameters are given for accurate predictions. A numerical instability issue is shown, and a way to stabilize the solution with a time-averaging scheme is introduced. The sound power is calculated using the equivalent source strength to demonstrate the redistribution of the sound intensity by a scattering body and the conservation of the total sound power. Finally, scattering of sound from a source in a short duct is tested to demonstrate the utility of the tool for a more complicated shape of the scattering surface.
机译：等效源方法已应用于频域和时域，以提供快速有效的声散射计算。尽管已经证明了该方法的优点和功能，但是尚未详细探讨该方法的局限性和缺点。需要对等效源方法有详细的了解，才能更加自信地在各种应用中使用该方法。本文提出了对时域等效源方法在声散射预测中的应用的初步评估。研究了该方法对数值参数的敏感性，包括表面并置点的数量，等效源的数量和位置，时间步长和截止奇异值，并为这些参数提供了建议以进行准确的预测。显示了数值不稳定性问题，并介绍了使用时间平均方案稳定解决方案的方法。使用等效声源强度计算声功率，以证明散射体对声强度的重新分配以及总声功率的守恒。最后，测试了来自短导管中的声源的声音散射，以证明该工具可用于散射表面更复杂的形状。

著录项

  • 来源
    《AIAA Journal》 |2011年第9期|p.1897-1906|共10页
  • 作者

    Seongkyu Lee; Kenneth S. Brentner; Philip J. Morris;

  • 作者单位

    Pennsylvania State University, University Park, Pennsylvania 16802;

    Pennsylvania State University, University Park, Pennsylvania 16802;

    Pennsylvania State University, University Park, Pennsylvania 16802;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号