A parallel multigrid preconditioned conjugate gradient algorithm for groundwater flow simulations
Journal Article
·
· Nuclear Science and Engineering
OSTI ID:379811
- Lawrence Livermore National Lab., CA (United States). Center for Applied Scientific Computing
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.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 379811
- Journal Information:
- Nuclear Science and Engineering, Vol. 124, Issue 1; Other Information: PBD: Sep 1996
- Country of Publication:
- United States
- Language:
- English
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