Comparison between 3D, 2D finite element methods and analytical calculations for electromagnetic problems

A study is carried out to determine when 2D modeling is sufficient for a 3D problem. Numerical and analytical errors are identified for different solved problems and the effect of disregarding the length of the system is studied (i.e. regarding it as infinite). A minimum length is determined for which the 2D results are better than the 3D results.<
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