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A Parallel Multigrid Preconditioned Conjugate Gradient Algorithm for Groundwater Flow Simulations
Ist Teil von
Nuclear science and engineering, 1996-09, Vol.124 (1), p.145-159
Ort / Verlag
La Grange Park, IL: Taylor & Francis
Erscheinungsjahr
1996
Link zum Volltext
Quelle
Taylor & Francis Journals Auto-Holdings Collection
Beschreibungen/Notizen
The numerical simulation of groundwater flow through heterogeneous porous media is discussed. The focus is on the performance of a parallel multigrid preconditioner for accelerating convergence of conjugate gradients, which is used to compute the pressure head. The numerical investigation considers the effects of boundary conditions, coarse grid solver strategy, increasing the grid resolution, enlarging the domain, and varying the geostatistical parameters used to define the subsurface realization. Scalability is also examined. The results were obtained using the ParFlow groundwater flow simulator on the CRAY T3D massively parallel computer.