Speaker: Jerome L. V. Lewandowski, Theory Dept., PPPL
Abstract:
A new multigrid algorithm based on the method of self-correction for
the solution of elliptic problems is described. The method exploits
information contained in the residual to dynamically modify the source
term (right-hand side) of the elliptic problem. It is shown that the
self-correcting solver is more efficient at damping the short wavelength
modes of the algebraic error than its standard equivalent. When used in
conjunction with a multigrid method, the resulting solver displays an
improved convergence rate with no additional computational work.