National Repository of Grey Literature 3 records found  Search took 0.01 seconds. 
Preconditioning of Saddle Point Systems
Lukšan, Ladislav ; Vlček, Jan
The solution of the original system, the use of the null space transformation and the use of the range space transformation are considered. Computational experiments are given. Generalization of saddle point systems is studied.
Mathematical Models of the Underground Water Flow and Transport of Contaminants
Maryška, Jiří ; Mužák, Jiří ; Rozložník, Miroslav ; Tůma, Miroslav
Mathematical models of unsteady flow and transport in underground porous media. The governing equations in a compact form. They are discretized by Rothe method in time and by mixed-hybrid finite element method in space. Methods which provide an easy and robust way to solve both the flow and transport problems with mixtures of reacting contaminants. Basic components of such approach.

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