Coordinate Transformation based on Differential Geometry for Modeling of U-Shaped Tubes

摘要

U-bend sections are critical parts of steam generator tubes in nuclear power plants. Efficient and accurate numerical modeling of eddy current inspection of U-bend section is non-trivial, time consuming and computationally intensive. The co-variant nature of Maxwell equations can be exploited to circumvent these issues by efficient change of spatial coordinates. In this contribution, co-ordinate transformation is introduced for simulating eddy current testing of U-bend tube sections. Cross-validation between the numerical computations carried out using the standard Cartesian coordinates and the transformed coordinates are presented.