Numerical simulation on jet noise induced by complex flowsdischarging from small caliber muzzle

Wang Yang; Jiang Xiao-hai; Yang Xu-pu; Guo Ze-qing

doi:10.11883/1001-1455(2014)04-0508-05

Volume 34 Issue 4

Sep. 2014

Turn off MathJax

Article Contents

Abstract

References

Article Navigation > Explosion And Shock Waves > 2014 > 34(4): 508-512

ZHANG Wei, MA Wen-lai, GUAN Gong-shun, PANG Bao-jun. Numerical simulation of non-spherical projectiles hypervelocity impact on spacecraft shield configuration[J]. Explosion And Shock Waves, 2007, 27(3): 240-245. doi: 10.11883/1001-1455(2007)03-0240-06

Citation:

Wang Yang, Jiang Xiao-hai, Yang Xu-pu, Guo Ze-qing. Numerical simulation on jet noise induced by complex flowsdischarging from small caliber muzzle[J]. Explosion And Shock Waves, 2014, 34(4): 508-512. doi: 10.11883/1001-1455(2014)04-0508-05

Citation:

PDF( 2071 KB)

Numerical simulation on jet noise induced by complex flowsdischarging from small caliber muzzle

doi: 10.11883/1001-1455(2014)04-0508-05

1.
School of Science, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
National Key Laboratory of Transient Physics, Nanjing University of Scienceand Technology, Nanjing 210094, Jiangsu, China
3.
School of Defense Engineering, People's Liberation Army University ofScience and Technology, Nanjing 210007, Jiangsu, China

Funds: Supported bythe National Natural Science Foundation of China (10902052)

More Information

Corresponding author: Wang Yang, wangyangxupu@163.com
Received Date: 2012-10-16
Rev Recd Date: 2013-04-19
Publish Date: 2014-07-25

Abstract

Abstract

In order to investigate the characteristics of muzzle noise, a numerical study on jet noise induced by complex flows discharging from 7.62 mm gun is achieved. Because of the complex flows structure, it is not easy to study muzzle noise by direct simulation of CAA in current level of computational condition. CFD-CAA hybrid method is applied. At first, the muzzle flow is calculated by using LES. Using the obtained data, the jet noise is carried out by using FW-H equation. The feasibility of the numerical method is verified by comparing with the experiment. Then, the jet noise of 7.62 mm gun is numerically studied by using the hybrid method. Based on the numerical results, the jet noise directivity is analyzed and the contour of sound pressure level is also drawn. Results indicate that jet noise is mainly concentrated in the near muzzle region and the maximum jet noise mainly occurs in the range of 30°-60°.
- mechanics of explosion,
- jet noise,
- large eddy simulation,
- small caliber muzzle,
- noise directivity,
- contours of sound pressure level

FullText(HTML)

References(10)

References

[1]	曾永珠.枪械设计中的膛口噪声预测计算方法[J].弹道学报, 1995, 7(4): 92-96. http://www.cqvip.com/Main/Detail.aspx?id=1708117 Zeng Yong-zhu. Prediction calculation method of muzzle noise in the firearms design[J]. Journal of Ballistics, 1995, 7(4): 92-96. http://www.cqvip.com/Main/Detail.aspx?id=1708117
[2]	Bin J, Kim M, Lee S. A numerical study on the generation of impulsive noise by complex flows discharging from a muzzle[J]. International Journal for Numerical Methods In Engineering, 2008, 75(8): 964-991.
[3]	Lee I C, Lee D J, Ko S H, et al. Numerical analysis of a blast wave using CFD-CAA hybrid method[C]//12th AIAA/CEAS Aeroacoustics Conference(27th AIAA Aeroacoustics Conference). Cambridge, Massachusetts, 2006.
[4]	Rehman H, Hwang S H, Fajar B, et al. Analysis and attenuation of impulsive sound pressure in large caliber weapon during muzzle blast[J]. Journal of Mechanical Science and Technology, 2011, 25(10): 2601-2606. doi: 10.1007%2Fs12206-011-0731-2
[5]	Liang S M, Tai C S. Analysis and prediction of shock-induced near-field acoustics from an exhaust pipe[J]. Computers & Fluids, 2011, 45(1): 222-232. https://www.sciencedirect.com/science/article/abs/pii/S0045793011000387
[6]	Smagorinsky J. General circulation experiments with the primitive equations, I: The basic experiment[J]. Monthly Weather Review, 1963, 91(3): 99-164. https://www.scirp.org/reference/referencespapers.aspx?referenceid=710259
[7]	Ffowcs Williams J E, Hawkings D L. Sound generation by turbulence and surfaces in arbitrary motion[J]. Royal Society of London, 1969, 264(3): 321-342. https://ui.adsabs.harvard.edu/abs/1969RSPTA.264..321F/abstract
[8]	Shur M, Spalart P R, Strelets M K. Noise prediction for increasingly complex jets, part Ⅰ: Methods and tests[J]. International Journal of Aeroacoustics, 2005, 4(3/4): 213-246. doi: 10.1260/1475472054771376
[9]	Shur M, Spalart P R, Strelets M K. Noise predicion for increasingly complex jets, part Ⅱ: Applications[J]. International Journal of Aeroacoustics, 2005, 4(3/4): 247-266. doi: 10.1260/1475472054771385
[10]	Sipatov A M, Usianin M V, Chuhlantseva N O. Applying Fluent Software for Jet noise Generation Modeling[C]//16th AIAA/CEAS Aeroacoustics Conference. Stockholm, Sweden, 2010.