National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Compressible Navier-Stokes-Fourier system for the adiabatic coefficient close to one
Skříšovský, Emil ; Pokorný, Milan (advisor) ; Feireisl, Eduard (referee)
In the present thesis we study the compressible Navier-Stokes-Fourier sys- tem. This is a system of partial differential equations describing the evolutionary problem for an adiabatic flow of a heat conducting compressible viscous fluid in a bounded domain. Here we consider the problem in two dimensions with zero Dirichlet boundary conditions for velocity. The cold pressure term in the pressure law for the momentum equation is here considered in the form pC(ϱ) ∼ ϱ logα (1+ϱ) for some α > 0, for which we need to work on the scale of Orlicz spaces in order to obtain useful estimates and in those space we formulate the problem weakly and also establish the weak compactness of the solution. The main result of this thesis is Theorem 6.1 where we show the existence of a weak solution with no assumptions on the size of the data and on arbitrary large time intervals. 1
Thick sets in Banach spaces
Skříšovský, Emil ; Spurný, Jiří (advisor) ; Kalenda, Ondřej (referee)
This thesis studies thick sets in Banach spaces, which are defined similarly as the sets of the second Baire category. We show some basic properties of thick and thin sets and their characterizations - mainly the relation with the Uniform Boundedness Principle, the Banach-Steinhaus and Open mapping theorem and w∗ - integrability. Lastly, we give an example of a thick set, which is not of the second Baire category. 1

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