We propose AeroSPEED, a solver based on the Spectral Element Method (SEM) that solves the aeroacoustic Lighthill's wave equation. First, the fluid solution is computed employing a cell centered Finite Volume method. Then, AeroSPEED maps the sound source coming from the flow solution onto the acoustic grid, where finally the Lighthill's wave equation is solved. An ad-hoc projection strategy is adopted to apply the flow source term in the acoustic solver. A model problem with a manufactured solution and the Noise Box test case are used as benchmark for the acoustic problem. We studied the noise generated by the complex flow field around tandem cylinders as a relevant aeroacoustic application. AeroSPEED is an effective and accurate solver for both acoustics and aeroacoustic problems.
翻译：我们提出了基于谱元方法（SEM）的 AeroSPEED 求解器，用于求解气动声学的 Lighthill 波动方程。首先，采用基于单元的有限体积方法计算流体方案。然后，AeroSPEED 将来自流体方案的声源映射到声学网格上，最终求解 Lighthill 波动方程。采用特定的投影策略将流体源项应用于声学求解器。我们使用制造解的模型问题和 Noise Box 测试用例来作为声学问题的基准。我们研究了串联气缸周围复杂流场产生的噪声作为一个重要的气动声学应用。AeroSPEED 是一种有效且准确的声学和气动声学求解器。
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