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A new method for predicting the induced magnetic field of naval vessels

Chen Jie Lu Xi-Wen

A new method for predicting the induced magnetic field of naval vessels

Chen Jie, Lu Xi-Wen
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Publishing process
  • Received Date:  18 February 2009
  • Accepted Date:  15 April 2009
  • Published Online:  15 January 2010

A new method for predicting the induced magnetic field of naval vessels

  • 1. 华东理工大学理学院,上海 200237

Abstract: A method based on magnetization is proposed to predict the induced magnetic field of naval vessels. We first deduce a formula to calculate the magnetic field in the internal region of magnetized objects from the viewpoint of magnetization,and then use the formula to define the point-function demagnetizing tensor and prove some properties of the tensor. Finally we use this formula to develop a new method to predict the induced magnetic field of naval vessels in a nonuniform applied field,and we call it the Magnetization Method,in which the point-function demagnetizing tensor is used. Compared with traditional methods,the magnetization method features low computational cost,high precision and manifest physical meaning. A numerical simulation of ship model verifies the method.

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