Distribution characteristics of rocket launching noise field

Zhang Lei; Ruan Wen-jun; Wang Hao; Wang Peng-xin

doi:10.11883/1001-1455(2015)05-0735-06

Volume 35 Issue 5

Nov. 2015

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Zhang Lei, Ruan Wen-jun, Wang Hao, Wang Peng-xin. Distribution characteristics of rocket launching noise field[J]. Explosion And Shock Waves, 2015, 35(5): 735-740. doi: 10.11883/1001-1455(2015)05-0735-06

Citation:

Zhang Lei, Ruan Wen-jun, Wang Hao, Wang Peng-xin. Distribution characteristics of rocket launching noise field[J]. Explosion And Shock Waves, 2015, 35(5): 735-740. doi: 10.11883/1001-1455(2015)05-0735-06

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Distribution characteristics of rocket launching noise field

doi: 10.11883/1001-1455(2015)05-0735-06

1.
School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
China Baicheng Weapon Test Centre, Baicheng 137001, Jilin, China

Received Date: 2014-02-19
Rev Recd Date: 2014-07-10
Publish Date: 2015-10-10

Abstract

Abstract

To investigate the characteristics of rocket launching noise and the acoustic distribution around the nozzle, the gas jet noise was studied experimentally and numerically. Three main components (turbulent mixing noise, screech tone and broadband shock noise radiation) and respective features of supersonic jet noise were explored, which revealed that the speed disturbance of the turbulent jet is the principal factor influencing noise radiation. The sound pressure level peaks of the jet noise at different test points were analyzed, and the distribution rule of the jet noise was got in the axial and radial directions. The investigated results show that with increasing the distance from the nozzle exit, the attenuation of noise in the axial direction is higher than that in the radical direction. Based on the experiments, the sound pressure level peaks of the supersonic jet noise were calculated by large eddy simulation and Ffowcs Williams-Hawkings acoustic analogy. The calculated results are in agreement with the experimental ones, which can provide reference for further study of controlling jet noise.
- fluid mechanics,
- sound pressure level,
- large eddy simulation,
- rocket launching noise,
- gas jet

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References(13)

References

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