Y. Zhu et Ac. Cangellaris, Application of nested multigrid finite elements to two-dimensional electromagnetic scattering, MICROW OPT, 30(2), 2001, pp. 97-101
Nested multigrid techniques are combined with the finite-element method for
the fast numerical solution of two-dimensional electromagnetic scattering
problems. The finite-element modeling is performed on nested meshes of the
same computational domain. The conjugate-gradient method is used to solve t
he resultant finite-element matrix for the finest mesh, while the multigrid
method acts as the preconditioner of the iterative solver. Numerical exper
iments are used to demonstrate the efficiency as well as the limits of the
proposed methodology. (C) 2001 John Wiley & Sons, Inc.