Partitioned simulation of the acoustic behavior of flexible marine propellers using finite and boundary elements

Partitioned simulation of the acoustic behavior of flexible marine propellers using finite and boundary elements
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使用有限元和边界元对柔性船用螺旋桨的声学行为进行分区模拟

DOI:
10.1002/pamm.202000315
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发表时间:
2020
期刊:
PAMM
影响因子:
--
通讯作者:
A. Düster
A. Düster
中科院分区:
--
文献类型:
--
作者:
L. Radtke;T. Lampe;M. Abdel-Maksoud;A. Düster

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在过去几年中,船级社已经公布了几项关于限制船舶噪音水平的规范。因此,作为噪声产生的主要来源的空泡螺旋桨的声学特征的预测已经引起了很多兴趣。为了对底层物理进行精确的数值模拟,必须考虑螺旋桨的变形,这将导致流固耦合(FSI)问题。为了对各个子问题使用不同的离散方法,我们采用分区求解方法。这使得可以将有限元解算器用于结构问题,而将边界元解算器用于流体问题。从FSI问题的解,使用Ffowcs William‐Hawking方程获得远场的声压。
In the last years, classification societies have announced several specifications regarding the limitation of the noise level of ships. Accordingly, the prediction of the acoustic signature of cavitating propellers, which are the main source for noise generation, has attracted a lot of interest. For an accurate numerical simulation of the underlying physics, the deformation of the propeller has to be taken into account, which results in a fluid‐structure interaction (FSI) problem.In order to utilize different discretization methods for the individual sub‐problems, we apply a partitioned solution approach. This makes it possible to use a finite element solver for the structural problem, while a boundary element solver is used for the fluid problem. From the solution of the FSI problem, the acoustic pressure in the far field is obtained using the Ffowcs William‐Hawking equation.
DOI: 10.1016/j.oceaneng.2019.106854
发表时间: 2020
期刊: Ocean Engineering
影响因子: 5
作者:
T. Lampe;L. Radtke;M. Abdel-Maksoud;A. Düster
通讯作者: A. Düster
DOI: 10.1080/09377255.2018.1542782
发表时间: 2018
影响因子: 2.2
作者:
L. Radtke;T. Lampe;M. Abdel-Maksoud;A. Düster
通讯作者: A. Düster