National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
FEM solver for incompressible flow problems
Bauer, Petr ; Klement, V. ; Žabka, V.
We develop a FEM solver for flow problems based on incompressible Navier-Stokes equations. The discretization of the convective term is semi-implicit and the resulting linear systems are solved using multigrid techniques. The parallel implementations via OpenMP and NVidia CUDA are presented and their performance is compared.
FEM for flow and pollution transport in urban canopy
Bauer, Petr ; Klement, V. ; Žabka, V.
We develop a mathematical model of air flow and pollution transport in a simplified urban canopy based on incompressible Navier-Stokes equations for air flow and the advection-diffusion equation for concentration. The model is discretized by means of finite element method (FEM) and the resulting systems are solved using multigrid techniques. A numerical study of pollutant dispersion in a domain with two street canyons is presented.
Comparison of the relative costs of public transport of selected regional cities
Žabka, Vojtěch ; Pova, Patrik (advisor) ; Hofman, Jiří (referee)
This bachelor thesis deals with cost of public transport in chosen region cities of Czech republic. Thesis examines the use of statistic modeling and comparision, if there is a correlation between the size of cities by population and per capita costs of the city. Another indicator examined is the cost per one transported and their dependence on the size of city, again according to population. Costs are dividing into investment costs and operating expenses, examines period 2003-2009.

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2 Žabka, Vojtěch
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