On multigrid acceleration of flow computations

D. Drikakis, O. Iliev, and D. Vassileva

Multigrid algorithm for accelerating 2D and 3D incompressible flows
computations is presented. The artificial compressibility formulation
of the Navier Stokes equations is exploited. The developed multigrid
algorithm is of Jameson's type. The smoothing procedure is based on a
single grid solver developed earlier by the first author.
The influence of different components of the multigrid algorithm
on its convergence behaviour is numerically studied and discussed.
Special attention is paid on combining two advanced approaches for
accelerating computations: multigrid approach and local solution
approach. Results from computations of different incompressible
flows are presented and discussed.