论文标题
使用标准流求解器的Helmholtz对航空声学的分解
Helmholtz's decomposition for Aeroacoustics using a standard Flow Solver
论文作者
论文摘要
本文是使用标准流求解器将可压缩速度分解为涡度和可压缩结构的简短指南。特别是，这是一个快速的解决方案，以了解模拟内部的可压缩字段，分别针对低马赫数等温流量的声学。提供了实施的详细信息，并将算法应用于带有唇部的溢出腔。流量求解器的结果显示出对应用的声学辐射清晰可见。最后，正如先前的研究所表明的那样，赫尔姆霍尔兹分解的标量电势公式的使用对于凸传代域有效。
This paper is a short guideline to the decomposition of a compressible velocity into vortical and compressible structures using standard flow solvers. In particular, this is a fast solution to get an idea of the compressible fields inside your simulation, respectively acoustics for low Mach number isothermal flows. The details of the implementation are presented and the algorithm is applied to an overflown cavity with a lip. The results of the flow solver show clearly visible to acoustic radiation for the application. Finally and as previous studies showed, the use of the scalar potential formulation of Helmholtz's decomposition is valid for convex propagation domains.
