Geodesic
Modeling of acoustic fields during gas flow around bodies
Žurnal Srednevolžskogo matematičeskogo obŝestva, Tome 22 (2020) no. 3, pp. 333-351

Voir la notice de l'article provenant de la source Math-Net.Ru

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 
@article{SVMO_2020_22_3_a5,
     author = {A. R. Bagapov and R. V. Zhalnin},
     title = {Modeling of acoustic fields during gas flow around bodies},
     journal = {\v{Z}urnal Srednevol\v{z}skogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {333--351},
     publisher = {mathdoc},
     volume = {22},
     number = {3},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SVMO_2020_22_3_a5/}
}
TY  - JOUR
AU  - A. R. Bagapov
AU  - R. V. Zhalnin
TI  - Modeling of acoustic fields during gas flow around bodies
JO  - Žurnal Srednevolžskogo matematičeskogo obŝestva
PY  - 2020
SP  - 333
EP  - 351
VL  - 22
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SVMO_2020_22_3_a5/
LA  - ru
ID  - SVMO_2020_22_3_a5
ER  - 
%0 Journal Article
%A A. R. Bagapov
%A R. V. Zhalnin
%T Modeling of acoustic fields during gas flow around bodies
%J Žurnal Srednevolžskogo matematičeskogo obŝestva
%D 2020
%P 333-351
%V 22
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SVMO_2020_22_3_a5/
%G ru
%F SVMO_2020_22_3_a5
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/