Massively parallel simulation of flow and transport in variably saturated porous and fractured media
This paper describes a massively parallel simulation method and its application for modeling multiphase flow and multicomponent transport in porous and fractured reservoirs. The parallel-computing method has been implemented into the TOUGH2 code and its numerical performance is tested on a Cray T3E-900 and IBM SP. The efficiency and robustness of the parallel-computing algorithm are demonstrated by completing two simulations with more than one million gridblocks, using site-specific data obtained from a site-characterization study. The first application involves the development of a three-dimensional numerical model for flow in the unsaturated zone of Yucca Mountain, Nevada. The second application is the study of tracer/radionuclide transport through fracture-matrix rocks for the same site. The parallel-computing technique enhances modeling capabilities by achieving several-orders-of-magnitude speedup for large-scale and high resolution modeling studies. The resulting modeling results provide many new insights into flow and transport processes that could not be obtained from simulations using the single-CPU simulator.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Civilian Radioactive Waste Management. Yucca Mountain Site Characterization Office (US)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 791815
- Report Number(s):
- LBNL-49407; R&D Project: 80NB71; TRN: US0200693
- Resource Relation:
- Conference: XIV International Conference on Computational Methods in Water Resources, Delft (NL), 06/23/2002--06/28/2002; Other Information: PBD: 15 Jan 2002
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
ALGORITHMS
FRACTURED RESERVOIRS
MULTIPHASE FLOW
PERFORMANCE
COMPUTERIZED SIMULATION
SITE CHARACTERIZATION
ENVIRONMENTAL TRANSPORT
WATER RESOURCES
YUCCA MOUNTAIN
RADIOACTIVE WASTE DISPOSAL
T CODES
RADIONUCLIDE MIGRATION
PARALLEL COMPUTING RESERVOIR SIMULATION