Electromagnetic Modelling of Canadian Forces Auxialiary Vessel (CFAV) Quest: Phase I Report


  1. Wallace, J.
  2. MacKay, K.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN);MARTEC Ltd, Halifax NS (CAN)
The underwater electromagnetic signatures of steel-hulled vessels with active signature reduction measures can be accurately modelled by commercially developed software packages. Static magnetic signatures can be computed with FLUX3D which is a sophisticated finite element code developed by Cedrat Groupe, Grenoble, France. Underwater electric potential can be suitably modelled using boundary element codes such as BEASY, developed by BEASY Group, Southampton, UK. DRDC has a requirement to demonstrate magnetic and electric signature prediction for the research vessel CFAV Quest. This report describes the work by Martec Limited to develop underwater electric potential and static magnetic models of CFAV Quest. A static magnetic model of CFAV Quest has been produced for FLUX3D using the structural finite-element model of CFAV Quest. The model accounts for both the structural and nonstructural components of the ship. Using this model, the Magnetic Anomaly Signature of CFAV Quest was predicted for several scenarios. An underwater electric potential model of CFAV Quest was created for prediction of the underwater electric potential using BEASY. The model was used to predict the underwater electric potential for two different Impressed Current Cathodic Protection (ICCP) configurations at various ICCP current output levels. The predicted results indicate that the electric potential varies linearly with ICCP current for a given configuration and the potential decreases rapidly with dist

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Finite element;boundary element;magnetic models;underwater electric potential;FLUX3D;BEASY;CFAV Quest
Report Number
DRDC-ATLANTIC-CR-2005-083;MARTEC-TR-05-26-REV-1 — Contractor Report
Date of publication
01 Jun 2005
Number of Pages

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