NDLI: A Parallel Implementation of the TOUGH2 Software Package for Large Scale Multiphase Fluid and Heat Flow Simulations

Content Provider	IEEE Xplore Digital Library
Author	Elmroth, E. Ding, C. Yu-Shu Wu Pruess, K.
Copyright Year	1999
Description	Author affiliation: Lawrence Berkeley National Laboratory (Elmroth, E.)
Abstract	TOUGH2 is a widely used simulation package for solving groundwater flow related problems such as nuclear waste isolation, environmental remediation, and geothermal reservoir engineering. It solves a set of coupled mass and energy balance equations using a finite volume method. The parallel implementation first partitions the unstructured computational domain. For each time step, a set of coupled non-linear equations is solved with Newton iteration. In each Newton step, a Jacobian matrix is calculated and an ill-conditioned non-symmetric linear system is solved in parallel using a preconditioned iterative solver. Communication is required for convergence tests and data exchange across partitioning borders. A real problem with 17,584 blocks and 43,815 connections indicates good scalability properties. From 2 to 128 processors on Cray T3E, the solution time is reduced from 7984 to 126 seconds. Improved parallel performance is expected for larger problems with 105-106 blocks in a Yucca Mountain nuclear waste site study.
Starting Page	52
Ending Page	52
File Size	139558
Page Count	1
File Format	PDF
ISBN	1581130910
DOI	10.1109/SC.1999.10002
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-11-13
Access Restriction	Subscribed
Rights Holder	Non IEEE
Subject Keyword	Software packages Large-scale systems Computational modeling Radioactive pollution Nonlinear equations Packaging Reservoirs Power engineering and energy Finite volume methods Concurrent computing preconditioners Ground water flow grid partitioning iterative linear solvers
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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A parallel implementation of the TOUGH2 software package for large scale multiphase fluid and heat flow simulations

A parallel implementation of the TOUGH2 software package for large scale multiphase fluid and heat flow simulations

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