Incomplete LU preconditioners for conjugate-gradient-type iterative methods
Journal Article
·
· SPE (Society of Petroleum Engineers) Reserv. Eng.; (United States)
In recent years, such conjugate-gradient-type methods as orthomin have been used very successfully with various preconditioners to solve the asymmetric linear systems that arise in reservoir simulation. Here these successful iterative methods are combined with a new set of preconditioners that have been derived from some powerful algorithms in direct sparse Gaussian elimination. The SPARSPAK implementations of minimum degree and nested dissection algorithms have been modified to yield incomplete LU factorizations. Their application to reservoir simulation problems is investigated here.
- Research Organization:
- Boeing Computer Services (US)
- OSTI ID:
- 5433243
- Journal Information:
- SPE (Society of Petroleum Engineers) Reserv. Eng.; (United States), Journal Name: SPE (Society of Petroleum Engineers) Reserv. Eng.; (United States) Vol. 3:1; ISSN SREEE
- Country of Publication:
- United States
- Language:
- English
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ALGORITHMS
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020200* -- Petroleum-- Reserves
Geology
& Exploration
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030200 -- Natural Gas-- Reserves
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99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
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COMPUTER CODES
COMPUTERIZED SIMULATION
FACTORIZATION
FUNCTIONS
GAUSS FUNCTION
GEOLOGIC DEPOSITS
GEOLOGIC MODELS
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MATHEMATICAL LOGIC
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PETROLEUM DEPOSITS
RESERVOIR ROCK
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S CODES
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