东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2003, Vol. 24 ›› Issue (2): 125-127.DOI: -

• 论著 • 上一篇    下一篇

轴对称场涡流的数值计算方法

陈绍林;刘淑英   

  1. 东北大学信息科学与工程学院;东北大学信息科学与工程学院 辽宁沈阳110004
  • 收稿日期:2013-06-23 修回日期:2013-06-23 出版日期:2003-02-15 发布日期:2013-06-23
  • 通讯作者: Chen, S.-L.
  • 作者简介:-
  • 基金资助:
    辽宁省自然科学基金资助项目 ( 9810 2 0 0 30 4)

Numerical method for eddy current in axis-symmetrical fields

Chen, Shao-Lin (1); Liu, Shu-Ying (1)   

  1. (1) Sch. of Info. Sci. and Eng., Northeastern Univ., Shenyang 110004, China
  • Received:2013-06-23 Revised:2013-06-23 Online:2003-02-15 Published:2013-06-23
  • Contact: Chen, S.-L.
  • About author:-
  • Supported by:
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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·

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

Abstract: Calculating eddy currents in oil-well casing pipe requires numerical methods to solve Bessel equations. The finite difference method for analyzing static fields is used to analyze sinusoidal steady-state field by using phasor method. Differential equations for solving electric field intensity are 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 more easy. The method is also suitable for other axis-symmetrical fields.

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