A fast multi-grid method for 3-d turbulent incompressible flows

Authors: Bai, X.S., Fuchs, L.F.
Document Type: Article
Pubstate: Published
Journal: J. Numerical methods for heat and fluid flow
Volume: 2   127-137
Year: 1993


The averaged Navier-Stokes and the k-a turbulence model equations are used to simulate turbulent flows in some internal fiew cases. The discrete equations are solved by diferent variations of Multigrid methods. These include both steady state as well as time dependent solvers. Locally refined grids can be added dynamically in all cases. The Multigrid schemes result in fast convergence rates, whereas local grid refinements allow improved accuracy with rational increasc in probiem size. The applications of the solver to a 3-D (cold) furnace model and to the simulation of the fiew in a wind tunnel past an object prove the efficiency of the Multigrid scheme with local grid refinement.