Numerical electromagnetic code

Burke, G.J. and Poggio, A.J. 1981. Numerical electromagnetic code (NEC), User s Guide. Lawrence Livermore Laboratory, Livermore, CA. 

Logan, J.C. and Rockway, J.W. 1986. The new MININEC (version 3) A mini-numerical electromagnetic code. Tech. Doc. 938, Naval Ocean System Center, San Diego, CA. 

The unknown coefficients of the current function are obtained by solving Equation 5.69. The numerical electromagnetic code (NEC) [5,6], the widely used computer program, is based on the MoM in the FD. The thin-wire time domain (TWTD) code [7] is based on the MoM in the time domain. 

Burke, G. and A. Poggio. 1980. Numerical electromagnetic code (NEC)-method of moment. Technical document 116. Naval Ocean Systems Center, San Diego, CA. 

Pokharel, R. K. and M. Ishii. 2007. Applications of time-domain numerical electromagnetic code to lightning surge analysis. IEEE Trans. Electromagn. Compat. 49(3) 623-631. 

This chapter is a brief diseussion of large deformation wave codes for multiple material problems and their applications. There are numerous other reviews that should be studied [7], [8]. There are reviews on transient dynamics codes for modeling gas flow over an airfoil, incompressible flow, electromagnetism, shock modeling in a single fluid, and other types of transient problems not addressed in this chapter. 

Although much as been done, much work remains. Improved material models for anisotropic materials, brittle materials, and chemically reacting materials challenge the numerical methods to provide greater accuracy and challenge the computer manufacturers to provide more memory and speed. Phenomena with different time and length scales need to be coupled so shock waves, structural motions, electromagnetic, and thermal effects can be analyzed in a consistent manner. Smarter codes must be developed to adapt the mesh and solution techniques to optimize the accuracy without human intervention. 

We have performed numerical experiments using a three dimensional relativistic kinetic electromagnetic particle-in-cell code The code works from first principles by solving the Lorentz force equation for the particles and the Maxwell s equations for the electromagnetic fields. 

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