Solution of the Incompressible Navier-Stokes Equations in
          General Coordinates by Krylov Space and Multigrid Methods

                           S. Zeng and P. Wesseling
             Department of Technical Mathematics and Informatics
                        Delft University of Technology
                                  Mekelweg 4
                                2628 CD Delft
                               The Netherlands

                                   Abstract

In this paper three iterative methods are studied:  preconditioned GMRES with
ILU preconditioning, GMRESR with multigrid as inner loop, and multigrid for
the solution of the incompressible Navier-Stokes equations in general
coordinates.  Robustness and efficiency of the three methods are investigated
and compared.  Numerical results show that the second method is very
promising.