典型文献
Numerical simulation of radiated noise during combustion of energetic materials in a closed bomb
文献摘要：
In this study,based on a closed bomb test combined with computational fluid dynamics,a structural finite element method,and an acoustic boundary element method,a fluid-solid acoustic one-way coupling calculation model is established for the combustion process of energetic materials in a closed bomb,and the effectiveness of the model is verified by experiments.It is found that the maximum peak sound pressure increases exponentially with an increase in loading doses or gas pressure.However,a change in the combustion coefficient of the energetic materials has little effect on the noise generated during the combustion process in the closed bomb.When the combustion coefficient is reduced by a multiple of 16,the maximum transient sound pressure is reduced by 1.79 dB,and the sound pressure level in the frequency band is reduced by 1.75 dB.With an increase in shell thickness,the combustion noise of the energetic materials in the closed bomb decreases,and the reduction range of the combustion noise increases with the increase in shell thickness.
文献关键词：
中图分类号：
作者姓名：
Shi-hui Xiong;Tuo Yang;Yu-jun Wu;Jing-cheng Wang;Yuan Li;Yu-quan Wen
作者机构：
State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing,100081,China;Xi'an Qinghua Cooperation,North Special Energy Group Co.,Ltd.,Xi'an,710025,China;Institute of Extreme Mechanics and School of Aeronautics,Northwestern Polytechnical University,Xi'an,710072,China
文献出处：
引用格式：
[1]Shi-hui Xiong;Tuo Yang;Yu-jun Wu;Jing-cheng Wang;Yuan Li;Yu-quan Wen-.Numerical simulation of radiated noise during combustion of energetic materials in a closed bomb)[J].防务技术,2022(07):1167-1178
A类：
B类：
Numerical,simulation,radiated,noise,during,combustion,energetic,materials,closed,bomb,In,this,study,test,combined,computational,fluid,dynamics,structural,finite,element,method,acoustic,boundary,solid,way,coupling,calculation,model,established,process,effectiveness,verified,by,experiments,It,found,that,maximum,peak,sound,pressure,increases,exponentially,loading,doses,gas,However,change,coefficient,has,little,generated,When,reduced,multiple,transient,dB,level,frequency,band,With,shell,thickness,decreases,reduction,range
AB值：
0.4323
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