| EPSRC Reference: |
GR/L76617/01 |
| Title: |
ITERATIVE SOLUTION TECHNIQUES WITH PRECONDITIONING VIA SPARSE DIRECT METHODS |
| Principal Investigator: |
Wathen, Dr A |
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| Department: |
Computer Science |
| Organisation: |
University of Oxford |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 September 1997 |
Ends: |
31 August 1998 |
Value (£): |
3,000
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| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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The Visiting Fellow will work on incomplete factorisation preconditioning for sparse matrices arising from applications in Computational Partial Differential Equations. He will specifically be concerned with the applicability of incomplete QR factorisations.In the first instance, we will consider matrices arising from finite difference approximation of advection-diffusion problems. We will consider both the use of the preconditioners together with a normal equations iterative approach employing the LSQR method for which the orthogonal factor is not required, and the use of non-symmetric iterative solver (GMRES will be used initially): in this case both factors will be needed. The work will consider both central and upwind approximations in two space dimensions and a range of problems from advection-dominated to diffusion-dominated.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.ox.ac.uk |