Open AccessLARGE-EDDY SIMULATION OF NOISE GENERATED BY PULSED SUPERSONIC JETS
Author(s) -
P. S. Chernyshov,
V. N. Emel’yanov,
A. M. Tsvetkov,
К. Н. Волков
Publication year - 2019
Publication title -
akustika
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.162
H-Index - 7
eISSN - 2570-8775
pISSN - 1801-9064
DOI - 10.36336/akustika201934136
Subject(s) - supersonic speed , jet noise , noise (video) , computational aeroacoustics , large eddy simulation , aeroacoustics , jet (fluid) , aerospace engineering , acoustics , computational fluid dynamics , computer simulation , physics , computer science , mechanics , engineering , turbulence , sound pressure , artificial intelligence , image (mathematics)
Development of models and methods of modelling and simulation of the mechanisms of noise generation in jet streams plays an important role in various engineering applications due to strict requirements for noise produced by different industrial devices as well as the possibilities of using sound in technological processes. The computational tools of numerical simulation of gas dynamics and aeroacoustics processes in supersonic jet flows are considered, and noise sources and noise generation mechanisms in supersonic jets are discussed. The approach to numerical simulation is based on large-eddy simulation technique allowing to resolve eddy structures in the flowfield and to predict noise generation more accurately compared to the existing tools. The results obtained show the structure of under- and over-expanded supersonic jets and could be used to calculate sources of noise in supersonic flows.