January 1, 2025

Finite Elements Method application to the problem of aviation noise source shielding efficiency investigation

Key Points

Sound diffraction calculations were performed to assess the efficiency of shielding designs, indicating diverse screen shapes affect performance.
Key findings verified calculations against known models—namely diffraction of sound on geometric shapes like cylinders and spheres.
Analysis used Maximum Length Sequence Method to experimentally validate sound diffraction results on a rectangular screen design.
This work underscores the potential to improve aviation noise control through optimized shielding solutions, highlighting engineering advancements.

Abstract

The paper presents the results of the calculation of sound diffraction on screens of various shapes, performed using the Finite Element Method (FEM) developed by the authors in the Bubnov–Galerkin formulation. The calculations were verified on problems that have an exact solution (diffraction on a cylinder, on a segment, and on a sphere), and the results of the experimental validation of the calculations of sound diffraction on a rectangular screen, performed using the Maximum Length Sequence Method, are also presented. The article was prepared based on the materials of the report at the 10th Russian conference “Computational experiment in aeroacoustics and aerodynamics”, September 16–21, 2024, Svetlogorsk, Kaliningrad region, http://ceaa.imamod.ru/.

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Cite This Study

S. L. Denisov (Wed,) studied this question.

synapsesocial.com/papers/6925573bc0ce034ddc35b0cd https://doi.org/https://doi.org/10.7868/s3034500625040068

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