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A network programming approach in solving Darcy's equation by mixed finite element methods (Articolo in rivista)
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- A network programming approach in solving Darcy's equation by mixed finite element methods (Articolo in rivista) (literal)
- Anno
- 2006-01-01T00:00:00+01:00 (literal)
- Alternative label
Arioli Mario; Manzini Gianmarco (2006)
A network programming approach in solving Darcy's equation by mixed finite element methods
in Electronic transactions on numerical analysis; Kent State University, Kent, Ohio (Stati Uniti d'America)
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- Arioli Mario; Manzini Gianmarco (literal)
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- http://etna.mcs.kent.edu/vol.22.2006/pp41-70.dir/pp41-70.pdf (literal)
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- Rutherford-Appleton Laboratory, Chilton, Didcot, Oxfordshire, U.K.
IMATI-CNR, Via Ferrata, 1, Pavia, Italy (literal)
- Titolo
- A network programming approach in solving Darcy's equation by mixed finite element methods (literal)
- Abstract
- We use the null space algorithm approach to solve the augmented systems produced by the mixed finite-element approximation of Darcy's laws. Taking into account the properties of the graph representing the trian- gulation, we adapt the null space technique proposed in [5], where an iterative-direct hybrid method is described. In particular, we use network programming techniques to identify the renumbering of the triangles and the edges, which enables us to compute the null space without floating-point operations. Moreover, we extensively take advantage of the graph properties to build efficient preconditioners for the iterative algorithm. Finally, we present the results of several numerical tests. (literal)
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