MSC2020 76N15
Modeling of acoustic fields during gas flow around bodies
A. R. Bagapov1, R. V. Zhalnin2
| Annotation | 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. |
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| Keywords | gas dynamics, HLLC, WENO, acoustic field, acoustic noise, OASPL |
1Arif R. Bagapov, master’s student at the Faculty of Mathematics and Information Technologies, National Research Mordovia State University, (68/1 Bolshevistskaya Str., Saransk 430005, Republic of Mordovia, Russia), ORCID: https://orcid.org/0000-0001-7975-6019, bagapov99@mail.ru
2Ruslan V. Zhalnin, head of the Department of Applied Mathematics, Differential Equations and Theoretical Mechanics, National Research Mordovia State University (68/1 Bolshevistskaya Str., Saransk 430005, Republic of Mordovia, Russia), Ph.D. (Physics and Mathematics), ORCID: https://orcid.org/0000-0002-1103-3321, zhrv@mrsu.ru
Citation: A. R. Bagapov, R. V. Zhalnin, "[Modeling of acoustic fields during gas flow around bodies]", Zhurnal Srednevolzhskogo matematicheskogo obshchestva,22:3 (2020) 333–351 (In Russian)
DOI 10.15507/2079-6900.22.202003.333-351
