National Repository of Grey Literature 151 records found  beginprevious100 - 109nextend  jump to record: Search took 0.01 seconds. 
Analytical solution of rotationally symmetric Stokes flow near corners
Burda, P. ; Novotný, Jaroslav ; Šístek, Jakub
We present analytical solution of the Stokes problem in rotationally symmetric domains. This is then used to find the asymptotic behaviour of the solution in the vicinity of corners, also for Navier-Stokes equations. We apply this to construct very precise numerical finite element solution.
Analytical solution of Stokes flow near corners and applications to numerical solution of Navier-Stokes equations with high precision
Burda, P. ; Novotný, Jaroslav ; Šístek, Jakub
We present analytical solution of the Stokes problem in 2D domains. This is then used to find the asymptotic behavior of the solution in the vicinity of corners, also for Navier-Stokes equations in 2D. We apply this to construct very precise numerical finite element solution.
Factors influencing quality and nutritive value of grass silages
NOVOTNÝ, Jaroslav
The paper analyzes the factors affecting the quality and nutritive value of wilted grasssilage. Grass silage sample were collected in the operating conditions for the firstmowing. Three groups were formed after 12 samples. The first group was the controlwithout using preservatives. The sekond group were included in the silage treated withbacterial agents. The third group included the bacterial-enzymetreated silage additives. There were no statistically signifiant differences in lactic acid kontent (P < 0.05) andvalues of thedegree of proteolysis (P < 0.05) between the kontrol group without the useof silage additives and the group, which was used for bacterial and bacterial-enzyme additives.
Implementace metody BDDC založená na forntálním a multifrontálním řešiči
Šístek, Jakub ; Novotný, Jaroslav ; Burda, Pavel ; Čertíková, Marta
A parallel implementation of the BDDC method is presented. It is based on frontal solver for subdomain problems, while the coarse problem is solved by a multifrontal algorithm. Results for an industrial problem of mine reel are included.
Modelování problémů proudění nestlačitelné tekutiny metodou konečných prvků
Burda, P. ; Novotný, Jaroslav ; Šístek, Jakub ; Damašek, Alexandr
We deal with modelling of flows in channels with abrupt changes of the diameter. We use a posteriori error estimates and adaptive strategy. We obtain solution with desired precision also in the vicinity of the corner, though there is a singularity.
Nedávný pohled na metodu BDDC a její paralelní implementaci
Šístek, Jakub ; Sousedík, Bedřich ; Čertíková, Marta ; Burda, P. ; Neumanová, E. ; Novotný, Jaroslav ; Damašek, Alexandr
A new view at the BDDC method was presented. Parallel implementation is described. Numerical results show effectiveness of the method.
Metoda konečných prvků pro Navierovy-Stokesovy rovnice v některých problémech nestlačitelného proudění
Burda, P. ; Novotný, Jaroslav ; Šístek, Jakub
We deal with 2D flows of incompressible viscous fluid modelled by the Navier-Stokes equations. We focus on reliable modelling of flows in channels or tubes with abrupt changes of the diameter. We present two techniques: one is based on aposteriori error estimates and adaptivity, second makes use of the apriori error estimates and asymptotic behaviour of the solution near the corners.
Vývoj efektivního paralelního BDDC řešiče pro úlohy lineární pružnosti
Šístek, Jakub ; Čertíková, Marta ; Burda, P. ; Neumanová, E. ; Pták, Svatopluk ; Novotný, Jaroslav ; Damašek, Alexandr
Our goal is to develop an efficient implementation of the BDDC method, which could be used fo solution of large problems of today's computational mechanics and structural analysis. A parallel approach is necessary for the usage of powerfull computer resources. We present results of computations of practical problems in 3D elasticty.
Aplikace metody dekompozice domén BDDC na výpočet napětí v konstrukcích
Šístek, Jakub ; Čertíková, Marta ; Novotný, Jaroslav ; Burda, P. ; Damašek, Alexandr
We deal with the Balancing domain decomposition with constraints method (BDDC) applied to 3D elasticity. Theoretical framework is recalled in the first part. The second part describes implementation of the method on parallel computers. Several numerical results of practical problems of structural analysis are presented.

National Repository of Grey Literature : 151 records found   beginprevious100 - 109nextend  jump to record:
See also: similar author names
49 NOVOTNÝ, Jakub
146 NOVOTNÝ, Jan
7 NOVOTNÝ, Jaromír
26 NOVOTNÝ, Jaroslav
49 NOVOTNÝ, Jiří
22 NOVOTNÝ, Josef
2 Novotný, J.
49 Novotný, Jakub
146 Novotný, Jan
1 Novotný, Jan Philipp
2 Novotný, Jan,
7 Novotný, Jaromír
3 Novotný, Jindřich
49 Novotný, Jiří
1 Novotný, Jonáš
22 Novotný, Josef
2 Novotný, Jáchym
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