Geodesic
Modeling of acoustic fields during gas flow around bodies
Žurnal Srednevolžskogo matematičeskogo obŝestva, Tome 22 (2020) no. 3, pp. 333-351 Cet article a éte moissonné depuis la source Math-Net.Ru

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The article describes the modeling of the acoustic field based on the analysis of pressure fluctuations. For this a model based on the laws of mass, energy and momentum is implemented in a two-dimensional setting. For the calculations, the HLLC scheme for solving the Rieman problem and the WENO scheme for reconstructing the gas-dynamic parameters on the faces between the cells are used. To simulate the acoustic field, a time-averaged characteristic was chosen - the overall sound pressure level (OASPL). The paper considers the acoustic field obtained when a gas flows around a single square body, a cascade of square bodies, a step and a cavity, an interpretation of the ongoing processes is given. The result of the study is the visualization and description of the phenomena that arise when a gas flow around bodies, as well as the study of the effect of removing the observation point on acoustic effects within the simulated area.
Keywords: gas dynamics, HLLC, WENO, acoustic field, OASPL.
Mots-clés : acoustic noise 
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A. R. Bagapov; R. V. Zhalnin. Modeling of acoustic fields during gas flow around bodies. Žurnal Srednevolžskogo matematičeskogo obŝestva, Tome 22 (2020) no. 3, pp. 333-351. http://geodesic.mathdoc.fr/item/SVMO_2020_22_3_a5/

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