空心圆导体集肤效应的数值算法

Numerical calculating methods for skin effect of hollow round conductor

在计算空心圆导体的集肤效应时 ,采用了对导体分层的处理方法 ,并根据电磁基本定律 ,推导了各层电流密度的数值计算公式 ,解决了用解析法难以计算的问题 ,而使用该方法编程远比使用有限元法简单 .同时给出了几种不同导体电流密度及透入深度的计算结果 ,得出了半径较大的圆导体在考虑集肤效应时可当作平面导体来处理的结论 .

A method that divides hollow cylindrical conductor into many layers is used to calculate the skin effect. On the basis of elementary electromagnetic laws, the numerical formulas for calculating current density of layers are deduced. The method solves the problems encounted in using analytic method. Its programming is also much simpler than that of finite element method. The paper gives the calculated results of current density and depth of penetration, from which we conclude that the conductor with larger radius may be regarded as plane one when skin effect is considered.