Research on the Electromagnetic Field Distribution of the Static Horizontal Electric Dipole in Shallow Sea

Abstract:

As a result of ship’s corrosion and anti-corrosion in shallow sea, the static electric field and static magnetic field can be produced around ships, which are referred to the static corrosion-related electromagnetic field. In order to analyze the field characteristics, a static horizontal electric dipole which is located in shallow sea is usually adopted to simulate the field. So,the electromagnetic field distribution of the electric dipole is very important because it is the base of analysis. In this paper, some research has been performed on the electromagnetic field of an electric dipole in three-layered conductive media. At first, equivalent source method has been used to derive the distribution expressions of the electromagnetic field in seawater. Then numerical simulation method has been used to do a contrastive analysis of the distribution characteristics of the electric field and magnetic field. At last, some experiments have been done in laboratory to prove the correctness of the theoretical derivation and the simulation analysis. The research results establish the foundation for the further application research.

• Periodical: Advanced Materials Research (Volumes 1006-1007)
• Pages: 1000-1004
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1006-1007.1000
• Online since: August 2014
• Authors: Han Chen Feng, Cong Chen, Ding Guo Li
• Keywords: Equivalent Source Method, Horizontal Static Electric Dipole, Layered Conductive Media, Scalar Potential, Vector Magnetic Potential

References

[1] Adey R, Baynham J. Predicting corrosion related electrical and magnetic fields using BEM[C]. Conf. Proc. UDT Europe, (2000), p.473～475.

[2] Rawlins P G. Aspects of corrosion related magnetic (CRM) signature management [C]. Conf. Proc. UDT Europe, (1998), p.237～242.

[3] John J H. Reduction of a Ship's Magnetic Field Signatures (Synthesis Lectures on Computational Electromagnetics) [M]. Morgan and Claypool Publishers, (2008).

[4] Demilier L, Durand C, Rannon C, et al. Corrosion related electromagnetic signatures measurements and modeling on a 1: 40th scaled model[J]. simulation of Electro-chemical processes II. WIT Transactions on Engineering sciences, Vol. 54 (2007).

DOI: 10.2495/ecor070231

[5] Bannister P R. The image theory electromagnetic fields of a horizontal electric dipole in the presence of a conducting half space [J]. Radio science, Vol. 17 (1982), p.1095~1102.

DOI: 10.1029/rs017i005p01095

[6] Keddie A J, Pocock M D, DeGiorgi V G. Fast solution techniques for corrosion and signatures modeling[J]. Simulation of Electro-chemical Processes II. WIT Transactions on Engineering Sciences, Vol. 54 (2007), p.225～234.

DOI: 10.2495/ecor070221

[7] Dymarkowski K , Uczciwek J. Ships Detection Based on Measurement of Electric Field in Disturbance Existing Region [J]. Conf. Proc. UDT Europe, (2000), p.1～6.

[8] Wimmer S A , Hogan E A, DeGiorgi V G. Dipole modelling and sensor design[J]. Simulation of Electro-chemical Processes II. WIT Transactions on Engineering Sciences, Vol. 54 (2007), p.143～152.

DOI: 10.2495/ecor070141

[9] King R W P. The electromagnetic field of a horizontal electric dipole in the presence of a three-layered region: supplement[J].J. Appl. phys. 1993, 74(8): 4845-4848.

DOI: 10.1063/1.354313

[10] Adey R, Baynham J M W. Predicting corrosion related signatures[J]. Simulation of Electro-chemical Processes II. WIT Transactions on Engineering Sciences, Vol. 54 (2007), p.213～223.

DOI: 10.2495/ecor070211

[11] Chen Cong, Gong Shen-guang, Li Ding-guo. The research on the static magnetic field related with corrosion and anti-corrosion of ships based on the electric dipole model[J]. Acta Armamentarii, 2010, 31(1): 113-118.