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Chinese Physics, 2000, Vol. 9(6): 464-468    DOI: 10.1088/1009-1963/9/6/012
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

ELECTROSTATIC POTENTIAL OF STRONGLY NONLINEAR COMPOSITES: HOMOTOPY CONTINUATION APPROACH

Wei En-bo (魏恩泊), Gu Guo-qing (顾国庆)
College of Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Abstract  The homotopy continuation method is used to solve the electrostatic boundary-value problems of strongly nonlinear composite media, which obey a current-field relation of J=$\sigma$ E+$\chi$|E|2E. With the mode expansion, the approximate analytical solutions of electric potential in host and inclusion regions are obtained by solving a set of nonlinear ordinary different equations, which are derived from the original equations with homotopy method. As an example in dimension two, we apply the method to deal with a nonlinear cylindrical inclusion embedded in a host. Comparing the approximate analytical solution of the potential obtained by homotopy method with that of numerical method, we can obverse that the homotopy method is valid for solving boundary-value problems of weakly and strongly nonlinear media.
Received:  30 January 2000      Accepted manuscript online: 
PACS:  02.60.Cb (Numerical simulation; solution of equations)  
  02.60.Lj (Ordinary and partial differential equations; boundary value problems)  
  41.20.Cv (Electrostatics; Poisson and Laplace equations, boundary-value problems)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 19834070).

Cite this article: 

Wei En-bo (魏恩泊), Gu Guo-qing (顾国庆) ELECTROSTATIC POTENTIAL OF STRONGLY NONLINEAR COMPOSITES: HOMOTOPY CONTINUATION APPROACH 2000 Chinese Physics 9 464

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