欢迎来到天天文库
浏览记录
ID:58310189
大小:801.36 KB
页数:5页
时间:2020-05-24
《浅海中船舶尾流产生的感应电磁场.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第35卷第8期哈尔滨工程大学学报Vo1.35No.82014年8月JournalofHarbinEngineeringUniversityAug.2014浅海中船舶尾流产生的感应电磁场张伽伟,姜润翔,龚沈光(海军工程大学兵器工程系,湖北武汉430033)摘要:为了完善船舶电磁场的特性研究,为船舶水下远程探测和特征信号控制提供参考,利用电磁场边界条件求解麦克斯韦方程组,得到了浅海中船舶尾流感应电磁场的数学模型,并对船舶尾流感应电磁场的特性进行了仿真分析。重点分析了尾流感应电磁场的水下特性,结果显示感应电磁场信号在水下具有良
2、好的特性:长波长、低频率,持续时间长,距离越远幅值衰减速度越小,功率谱为线谱,可用于船舶的远程水下探测。海上实测船舶尾流感应电场数据与理论仿真对比表明,实测数据的量级、变化趋势和功率谱均与理论模型的计算结果一致,证明了理论模型的正确性。关键词:浅海;船舶尾流;感应电磁场;麦克斯韦方程组;水下特性;远程水下探测;电磁场信号doi:10.3969/j.issn.1006—7043.201306049网络出版地址:http://www.cnki.net/kcms/doi/10.3969/j.issn.1006-7043.201
3、306049.html中图分类号:0441.1文献标志码:A文章编号:1006—7043(2014)08—0931—05StudyoftheelectricfieldinducedbythewakeofamovingshipZHANGJiawei,JIANGRunxiang,GONGShenguang(NavalUniversityofEngineering,DepartmentofWeaponryEngineering,Wuhan430033,China)Abstract:Inordertoimprovetherese
4、archofthefeaturesofelectromagneticfieldsofashipandprovideareferencefortheremotedetectionandthecontrolofunderwaterfeaturesignalsoftheship,amathematicalmodelrepresentinginducedelectromagneticfieldsassociatedwithshipwakeswasbuiltbysolvingMaxwellSequationsinfinitedep
5、thseas.Thesimulationandanalysiswereconductedonthefeaturesoftheelectromagneticfieldinducedbyshipwakes.Theanalysiswasfocusedontheunderwaterseafeaturesoftheshipwakeinducedelectromagneticfield.Theresultsshowthattheinducedelectromagneticfieldsignalshavesignificantunde
6、r—waterseafeaturesincludinglongwavelengths,lowfrequency,longduration,linespectrum,andthatthelongerthedistance,thesmallertheampli—tudedecayrate.Allthesefeaturesaresignificantfortheremoteunder-waterseadetectionofaship.Comparativestudyoftherealelectricfieldsignalsan
7、dthetheoreticalsimulationdatarevealsthattheyareconsistentinorderofmagnitude,trendandpowerspectrum,whichdemonstratesthecorrectnessoftheproposedmode1.Keywords:epicontinentalsea;shipwakes;inducedelectromagneticfields;MaxwellSequations;under-waterseafeatures;remoteun
8、der.waterseadetection;electicfieldsignal近年来,船舶的隐身性能得到了高度重视,减振时,且无法消除和模拟。由于海水是良导体,当海水降噪技术,消磁、消电技术在船舶上的大量运用,使得运动时会切割地球磁感线引起空间磁场的变化而产船舶的特征信号更难捕捉,在船舶的探测方面,寻找生感应电磁场
此文档下载收益归作者所有