| 轴对称场涡流的数值计算方法 |
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| 引用本文： | 陈绍林,刘淑英.轴对称场涡流的数值计算方法[J].东北大学学报(自然科学版),2003,24(2):125-127. |
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| 作者姓名： | 陈绍林 刘淑英 |
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| 作者单位： | 东北大学信息科学与工程学院,辽宁沈阳,110004 |
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| 基金项目： | 辽宁省自然科学基金资助项目 ( 9810 2 0 0 30 4) |
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| 摘 要： | 计算轴对称场的涡流 ,用数值方法求解贝塞尔方程·利用相量法将分析静态场的有限差分法用于分析正弦稳态场 ;将求解电场强度的微分方程变为求解磁场强度的微分方程 ,使得第二类边值问题变为第一类边值问题·用磁场强度的旋度求得电场强度 ,再由电场强度求得电流密度·用来计算油井套管的涡流 ,计算结果与实验结果相符·
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| 关 键 词： | 正弦稳态场 轴对称场 涡流 边值问题 贝塞尔方程 相量法 |
| 文章编号： | 1005-3026(2003)02-0125-03 |
| 修稿时间： | 2002年8月22日 |
Numerical Method for Eddy Current in Axis-Symmetrical Fields |
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| CHEN Shao-lin,LIU Shu-ying.Numerical Method for Eddy Current in Axis-Symmetrical Fields[J].Journal of Northeastern University(Natural Science),2003,24(2):125-127. |
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| Authors: | CHEN Shao-lin LIU Shu-ying |
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| Institution: | (1) Sch. of Info. Sci. and Eng., Northeastern Univ., Shenyang 110004, China |
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| Abstract: | Calculating eddy currents in oil-well casing pipe requires numerical methods to solve Bessel equations. The finite differential method for analyzing static fields was be used to analyze sinusoidal steady-state field by using phasor method. Differential equations for solving electric field intensity were turned into those for solving magnetic field intensity. This turns the second-class boundary problem into a first class one and, makes the solving process much easy. The method is also suitable for other axially symmetrical fields. |
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| Keywords: | sinusoidal steady-state field axially symmetrical field eddy current boundary problem Bessel equations phasor representation |
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