CAJ | 학술논문

分析了金属体在海水中运动产生感应电场的机理。采用镜像法推导了水下垂直和水平直流电流元在海水中的电场表达式，进一步导出了海水中运动金属体切割地磁场而在海水中产生的感应电场数学模型，并计算分析了运动金属体的感应电场大小及空间分布。仿真计算结果表明，20m 长的金属椭球体，以4m/s 的航速在水下10m 航行时，在水下30m 左右感应电场的量级为 nV /m，并且该电场在空间分布上有明显的特征。
분석료금속체재해수중운동산생감응전장적궤리。채용경상법추도료수하수직화수평직류전류원재해수중적전장표체식，진일보도출료해수중운동금속체절할지자장이재해수중산생적감응전장수학모형，병계산분석료운동금속체적감응전장대소급공간분포。방진계산결과표명，20m 장적금속타구체，이4m/s 적항속재수하10m 항행시，재수하30m 좌우감응전장적량급위 nV /m，병차해전장재공간분포상유명현적특정。
A mathematical model is proposed to calculate the electric fields induced by the motion of metal body across the earth's magnetic field,according to deriving the expressions of electric fields induced by the vertical and horizontal DC current under seawater using the mirror image method.The magnitude and spatial distribution characteristics of the electric fields were analyzed,the results show that in the 30m depth,the magnitude of the electric field induced by a 20m′s long metal ellipsoid sailing 10m below water surface at the velocity of 4m /s is nV /m,and apparent characteristics can be noticed in its spatial distribution.