使用入口多式调制的输入管道流量计算和声学传播
B Mangin1,2, G Gabard1, M Daroukh2
1Laboratoire d'Acoustique de l'Université du Mans (LAUM), UMR 6613, Institut d'Acoustique - Graduate School (IA-GS), CNRS, Le Mans Université, France.
The Journal of the Acoustical Society of America
|May 24, 2024
概括
一种新的多模式方法有效计算轴对称管道的基流和声学扰动. 这种方法使用多项式基础,提高计算成本,同时确保准确的声音传播分析.
科学领域:
- 声学 声学 在声学方面
- 计算流体动力学的流体动力学.
- 数学方法 数学方法
背景情况:
- 管道中的声学扰动和基流分析对于理解噪声产生和传播至关重要.
- 现有的方法经常面临高计算成本或处理复杂的管道几何形状的局限性.
- 开发高效准确的数值技术对于空气动力学和声学模拟至关重要.
研究的目的:
- 介绍一种用于计算轴对称管道中基本流量和声波传播的新型多式方式.
- 调查多项式辐射基的使用,以减少计算成本.
- 为了应对非物理高阶模式带来的挑战,并改善声学计算的矩阵调节.
主要方法:
- 采用了多模态方法,使用多项式辐射基础,而不是标准模态基础.
- 检查了引入的非物理高级模式对稳定性的影响.
- 修改了轴向集成,以改善声学计算中的矩阵调节.
- 通过将频率设置为零并修改出口入口和密度感应来调整流量计算方法.
主要成果:
- 拟议的多式联络方法在计算轴对称管道内的平均流量方面表现出高效率.
- 该方法准确地传播声音干扰,与各种管道壁类型的有限元素方法进行了验证.
- 尽管引入了非物理模式,但多项式基础的使用得到了有效管理.
结论:
- 开发的多式联络方法为分析轴对称管道的基流和声学扰动提供了高效和准确的解决方案.
- 整合和基础函数的修改增强了数值方案的稳定性和条件.
- 这种方法为声学和流体动力学研究人员和工程师提供了宝贵的工具.
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