A Parallel Multigrid Preconditioned Conjugate Gradient Algorithm for Groundwater Flow Simulations

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...

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Veröffentlicht in:Nuclear science and engineering Jg. 124; H. 1; S. 145 - 159
Hauptverfasser: Ashby, Steven F., Falgout, Robert D.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: La Grange Park, IL Taylor & Francis 01.09.1996
American Nuclear Society
Schlagworte:
Boundary conditions
Computer simulation
Computer simulation languages
Convergence of numerical methods
Earth sciences
Earth, ocean, space
Exact sciences and technology
Groundwater flow
Hydrogeology
Hydrology. Hydrogeology
Parallel processing systems
Porous materials
Pressure
geostatistics
algorithms
ground water
two-dimensional models
flow mechanism
heterogeneous materials
porous materials
digital simulation
boundary conditions
heterogeneity
computers
ISSN:0029-5639, 1943-748X
Online-Zugang:Volltext
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Zusammenfassung: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.
Bibliographie:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0029-5639
1943-748X
DOI:10.13182/NSE96-A24230