A  PRESSURE BASED MULTIGRID PROCEDURE FOR THE
                NAVIER-STOKES EQUATIONS ON UNSTRUCTURED GRIDS

                          R. Jyotsna and S. P. Vanka
             Department of Mechanical and Industrial Engineering
         University of Illinois at Urbana-Champaign, Urbana, IL 61801

                                   ABSTRACT

We present details and performance of a pressure based multigrid solution
procedure for the Navier-Stokes equations discretized on triangular grids.
The discretization uses a control volume methodology, with linear inter-nodal
variation of the flow variables.  The use of the multigrid technique provides
rapid and grid-independent rates of convergence.  Three model driven cavity
flows are computed, and the performance of the method at several grid
densities and Reynolds numbers is reported.  Representative flow fields
characterizing the viscous eddies are also presented.