Investigation of wave propagation in coupled nonlinear slab waveguide using finite element method

Fig. 8. Electric field distribution on the surface of the aircraft at different time locations. (a) Top view. (b) Bottom view.Fig. 9. Snapshots of the magnitude of the electric field distribution in the computational domain. The F-16 aircraft is illuminated by a Gaussian pulse on-nose incidence. VII. CONCLUSIONWe have presented an IP-DGTD with a conformal PML for the domain truncation. The numerical convergence of both central and upwind flux formulations were studied. Moreover, the late time instability and performance of the PML were studied by means of numerical experiments. Finally, a local time-stepping technique was employed to reduce the total CPU time and improve the efficiency in multi-scale applications. ACKNOWLEDGMENTThe authors thank Ansoft Corporation for their support of this work. REFERENCES[1] J. S. Hesthaven and T. Warburton, "Nodal high-order methods on unstructured grids," Abstract-An innovative method for fast analysis of electromagnetic problems comprising nonlinear dielectrics is proposed. The method is based on the combination of finite elements and domain decompositionmethods. This latter technique allows for the separation of the problem in multiple subproblems which can be solved separately. By appropriately defining one of such subdomains as containing all the nonlinear dielectrics it is possible to restrict the application of an iterative algorithm for the numerical solution of nonlinear equations only to this latter, smaller, domain. Numerical results showing the accuracy and efficiency of this technique are presented in few 2D cases.Index Terms-Domain decomposition, finite element method, nonlinear media, nonlinear wave propagation.

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A Domain Decomposition Technique for Efficient Iterative Solution of Nonlinear Electromagnetic Problems

Guarnieri

Pelosi

Rossi

et al. 2010

IEEE Trans. Antennas Propagat.

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Investigation of wave propagation in coupled nonlinear slab waveguide using finite element method

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A Domain Decomposition Technique for Efficient Iterative Solution of Nonlinear Electromagnetic Problems

A Domain Decomposition Technique for Efficient Iterative Solution of Nonlinear Electromagnetic Problems

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