Numerical Investigation of Supersonic Gas Jet Noise using Large Eddy Simulation
- DOI
- 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/).
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 - 10.2991/icmmita-15.2015.268 ID - Zhang2015/11 ER -