船舶缩比模型轴频电场的传播特征  

Transmission characteristic of shaft-frequency electric field based on ship's physical scale model

作　　者：梁成浩[1] 于楠[2] 黄乃宝[1] 吴建华[2] 

机构地区：[1]大连海事大学机电与材料工程学院,辽宁大连116026 [2]大连理工大学化工学院,辽宁大连116012

出　　处：《大连海事大学学报》2008年第1期116-118,121,共4页Journal of Dalian Maritime University

摘　　要：为研究船舶轴频电场的传播特征,采用信号测量系统,测量和分析了船舶缩比模型轴频电场信号.轴频电场沿船方向传播的测试结果表明,轴频电场的空间分布具有区域性:当测量点从螺旋桨附近移至船尾时,x分量轴频电场信号由较弱逐渐增强至最大幅值,y分量和z分量轴频电场幅值则急剧降低.测量点由船体向外移动时,x分量轴频电场幅值迅速衰减;测量点移至船长倍数的0.33处时,衰减变得缓慢;测量点继续移至船长倍数的1.65处时,轴频电场特征信号不明显.Transmission characteristic of shaft-frequency electric field based on a ship＇ s physical scale model was analyzed using signal measurement system. The results indicate that the spatial distribution of shaft-frequency electric field has regional characteristic when transmitting along the ship. During the process when measuring point moves from propeller to stern, x-axis shaft-frequency electric field changes from feebleness to the strongest whereas that of y-axis and z axis reduces sharply. The shaft-frequency electric field signal of x-axis reduces sharply when the electrode is shifted from hull to its outside region. The attenuation slows down while the removed distance exceeds 0.33 times of the ship length. The shaft-frequency electric-field signal of x-axis becomes indistinct as the removed distance reaches 1.65 times of the ship length.

关 键 词：船舶缩比模型 轴频电场 传播特征 

分 类 号：TG174.41[金属学及工艺—金属表面处理]