Proceedings of the 2015 3rd International Conference on Machinery, Materials and Information Technology Applications

Numerical Investigation of Supersonic Gas Jet Noise using Large Eddy Simulation

Authors
Lei Zhang, Hao Wang, Wenjun Ruan
Corresponding Author
Lei Zhang
Available Online November 2015.
DOI
https://doi.org/10.2991/icmmita-15.2015.268How to use a DOI?
Keywords
Jet flow; Acoustics; Large eddy simulation (LES); noise reduction.
Abstract

Noise of gas jet is one of the main noise sources for solid rocket motor, the jet flow field parameters plays an important role in the radiated noise generated. An implicit large eddy simulation (LES) methodology is performed of supersonic gas jet flows in this paper. The flow-induced noise generated by the jets is investigated by a computational acoustics methodology that couples the near field unsteady flow field data computed by LES with a surface integral acoustic method for noise prediction. Noise sources and integral surfaces are selected on the basis of turbulence characteristics. The calculation results show that the jet noise is strongly directional, with the angle of the measuring locations deviating from the jet central axis increases, the sound pressure level peak decreases, and it reaches maximum at the angle of 45°away from the jet central axis. Comparisons of the jet mean flow, turbulent statistics, and jet noise results with experimental data of jets at similar flow conditions were done and reasonable agreement is observed. The results can be taken into consideration about reduction of solid rocket engine jet noise.

Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 2015 3rd International Conference on Machinery, Materials and Information Technology Applications
Series
Advances in Computer Science Research
Publication Date
November 2015
ISBN
10.2991/icmmita-15.2015.268
ISSN
2352-538X
DOI
https://doi.org/10.2991/icmmita-15.2015.268How to use a DOI?
Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Lei Zhang
AU  - Hao Wang
AU  - Wenjun Ruan
PY  - 2015/11
DA  - 2015/11
TI  - Numerical Investigation of Supersonic Gas Jet Noise using Large Eddy Simulation
BT  - Proceedings of the 2015 3rd International Conference on Machinery, Materials and Information Technology Applications
PB  - Atlantis Press
SP  - 1456
EP  - 1460
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmmita-15.2015.268
DO  - https://doi.org/10.2991/icmmita-15.2015.268
ID  - Zhang2015/11
ER  -