[1]许桂阳,翁春生,李 宁.脉冲爆轰发动机近场爆轰噪声特性研究[J].南京理工大学学报(自然科学版),2014,38(06):781.
 Xu Guiyang,Weng Chunsheng,Li Ning.Detonation noise characteristics of pulse detonation engine in near-field[J].Journal of Nanjing University of Science and Technology,2014,38(06):781.
点击复制

脉冲爆轰发动机近场爆轰噪声特性研究
分享到:

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
38卷
期数:
2014年06期
页码:
781
栏目:
出版日期:
2014-12-31

文章信息/Info

Title:
Detonation noise characteristics of pulse detonation engine in near-field
作者:
许桂阳翁春生李 宁
南京理工大学 瞬态物理国家重点实验室,江苏 南京 210094
Author(s):
Xu GuiyangWeng ChunshengLi Ning
National Key Laboratory of Transient Physics,NUST,Nanjing 210094,China
关键词:
爆炸力学 脉冲爆轰发动机 雾化汽油 噪声辐射 指向性 爆轰噪声 冲击噪声 射流噪声 衰减系数 轴向距离
Keywords:
explosion mechanics pulse detonation engines atomizing gasoline noise radiation directivity detonation noise impulsive noise jet noise attenuation coefficients axial distance
分类号:
V231.22
摘要:
为探索气液两相脉冲爆轰发动机爆轰噪声形成机理及控制方法,对雾化汽油近场爆轰噪声进行测量分析,建立理论模型并利用时空守恒元/求解元方法(CE/SE)进行数值仿真。结果表明:爆轰噪声主要由冲击噪声和射流噪声组成; 冲击噪声在爆轰噪声中占主导作用,并引起爆轰噪声峰值; 爆轰噪声峰值与径向距离三次方成反比; 在0°、30°、45°和90°方向拟合得到的衰减系数分别为4.3×10-2、3.4×10-2、2.8×10-2和7.0×10-3; 脉冲爆轰发动机近场爆轰噪声峰值指向性明显; 随着角度的增大,爆轰噪声峰值逐渐降低; 随着轴向距离的增加,射流噪声逐渐减小; 当轴向距离小于900 mm时,射流噪声衰减速度小于冲击噪声衰减速度,当轴向距离大于1 200 mm时,射流噪声衰减速度大于冲击噪声衰减速度。
Abstract:
To study the formation mechanism and control method of detonation noise for gas-liquid two-phase pulse detonation engines,atomizing gasoline detonation noise in near-field is measured and analyzed.A theory model is set up and the space-time conservation element and solution element method(CE/SE)is utilized in near-field numerical simulation of pulse detonation engine detonation noise.The results show that:detonation noise is mainly composed of impulsive noise and jet noise; impulsive noise plays a dominant role in detonation noise and causes detonation peak noise; detonation peak noise is proportional to -3 power of the radial distance in near-field; the fitted attenuation coefficients are 4.3×10-2,3.4×10-2,2.8×10-2 and 7.0×10-3 at the 0°,30°,45° and 90° directions; obvious directivity of pulse detonation engine detonation peak noise occurs in near-field; pulse detonation engine detonation peak noise amplitude decrease gradually with the increase of measurement angle; pulse detonation engine jet noise amplitude decrease gradually with the increase of axial distance; when the axial distance is less than 900mm,the rate of jet noise decay is lower than that of the impulsive noise; when the axial distance is more than 1 200 mm,the rate of jet noise decay is higher than that of the impulsive noise.

参考文献/References:

[1] Boesch H E Jr,Reiff C C,Benwell B T.Modification of the acoustic spectrum of detonation tube shock waves by timed multiple-pulse addition[R].ADA379212.
[2]Allgood D,Glaser A,Caldwell N,et al.Acoustic measurements of a pulse detonation engine[R].AIAA2004-2879.
[3]Allgood D C.An experimental and computational study of pulse detonation engines[D].Cincinnati,Ohio,USA:Aerospace Engineering,University of Cincin-nati,2004.
[4]Glaser A,Caldwell N,Gutmark E.A fundamental study on the acoustic behavior of pulse detonation engines[R].AIAA2007-444.
[5]章雄伟,何立明,曾昊,等.脉冲爆震发动机爆震声音信号分析[J].航空发动机,2011,37(1):28-30. Zhang Xiongwei,He Liming,Zeng Hao,et al.Detonation audio data analysis on pulse detonation engine[J].Aeroengine,2011,37(1):28-30.
[6]Zhen Longxi,Li Na,Yan Chuanjun.Investigation on noise radiation characteristics of two-phase multi-cycle pulse detonation engine[R].AIAA2009-297.
[7]李娜,郑龙席,严传俊,等.混合式脉冲爆震发动机噪声辐射特性研究[J].噪声与振动控制,2009,29(1):101-105. Li Na,Zheng Longxi,Yan Chuanjun,et al.Research on noise radiation characteristics of hybrid pulse detonation engine[J].Noise and Vibration Control,2009,29(1):101-105.
[8]王杰,刘建国,白桥栋,等.填充系数对脉冲爆震发动机性能影响分析[J].南京理工大学学报,2008,32(1):1-4. Wang Jie,Liu Jianguo,Bai Qiaodong,et al.Analysis of effects of filling coefficients on pulse detonation engine performance[J].Journal of Nanjing University of Science and Technology,2008,32(1):1-4.
[9]王研艳,翁春生.带扩张喷管脉冲爆轰发动机一维两相流场的计算[J].火炮发射与控制学报,2011(4):66-69. Wang Yanyan,Weng Chunsheng.Calculation and analysis on one-dimensional two-phase flow field of pulse detonation engine with diverging nozzle[J].Journal of Gun Launch & Control,2011(4):66-69.

相似文献/References:

[1]何源,何勇,潘绪超,等.含能破片冲击引爆屏蔽炸药研究[J].南京理工大学学报(自然科学版),2011,(02):187.
 HE Yuan,HE Yong,PAN Xu-chao,et al.Initiation of Shielded High Explosive Impacted by Energetic Fragment[J].Journal of Nanjing University of Science and Technology,2011,(06):187.
[2]董刚,范宝春.气相爆轰模拟的动态存储/删除算法[J].南京理工大学学报(自然科学版),2009,(05):576.
 DONG Gang,FAN Bao-chun.Dynamical Storage-deletion Algorithm for Gaseous Detonation Modelling[J].Journal of Nanjing University of Science and Technology,2009,(06):576.
[3]杨亚东,李向东,伯雪飞.起爆方式对可变形定向战斗部威力的影响[J].南京理工大学学报(自然科学版),2012,36(05):762.
 YANG Ya-dong,LI Xiang-dong,BO Xue-fei.Influence of Initiation Mode on Power of Deformable Directional Warhead[J].Journal of Nanjing University of Science and Technology,2012,36(06):762.
[4]李金凤.爆炸载荷下药型罩形成多破片的数值模拟[J].南京理工大学学报(自然科学版),2006,(02):186.
 LI Jin-feng.Numerical Simulation of Liner Forming Multi-fragments Due to Explosive Loading[J].Journal of Nanjing University of Science and Technology,2006,(06):186.
[5]杨亚东,李向东,王晓鸣,等.钢筋混凝土结构内爆炸相似模型试验研究[J].南京理工大学学报(自然科学版),2016,40(02):135.[doi:10.14177/j.cnki.32-1397n.2016.40.02.002]
 Yang Yadong,Li Xiangdong,Wang Xiaoming,et al.Experimental study on similarity model of reinforced concrete structure under internal explosion[J].Journal of Nanjing University of Science and Technology,2016,40(06):135.[doi:10.14177/j.cnki.32-1397n.2016.40.02.002]
[6]祖旭东,黄正祥,朱传胜.带大隔板爆炸成型弹丸战斗部药型罩结构研究[J].南京理工大学学报(自然科学版),2017,41(06):676.[doi:10.14177/j.cnki.32-1397n.2017.41.06.002]
 Zu Xudong,Huang Zhengxiang,Zhu Chuansheng.Liner configuration of explosively formed projectile warheadwith large wave shaper[J].Journal of Nanjing University of Science and Technology,2017,41(06):676.[doi:10.14177/j.cnki.32-1397n.2017.41.06.002]

备注/Memo

备注/Memo:
收稿日期:2013-07-10 修回日期:2013-09-01
基金项目:国家自然科学基金(11002074); 高等学校博士学科点专项科研基金(20113219120045); 中央高校基本科研业务费专项资金(30920130112007)
作者简介:许桂阳(1990-),男,博士生,主要研究方向:脉冲爆轰发动机降噪,E-mail:xuguiyang90@163.com; 通讯作者:翁春生(1964-),男,教授,博士生导师,主要研究方向:脉冲爆轰发动机,E-mail:wengcs@126.com。
引文格式:许桂阳,翁春生,李宁.脉冲爆轰发动机近场爆轰噪声特性研究[J].南京理工大学学报,2014,38(6):781-786.
投稿网址:http://zrxuebao.njust.edu.cn
更新日期/Last Update: 2014-12-31