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    • CFD ANALYSIS OF THE SPACER GRIDS AND MIXING VANES EFFECT ON THE FLOW IN THE CHOSEN PART OF THE TVSAT FUEL ASSEMBLY 

      Autor: Juklíček , Jakub; Železný , Václav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      CFD is a promising and widely spread tool for a flow simulation in nuclear reactor fuel assemblies. One of the limiting factors is the complicated geometry of a spacer grid. It leads to the computational mesh with high ...
    • ANALYSIS OF MECHANICAL PROPERTIES OF HYDROTHERMALLY CURED HIGH STRENGTH CEMENT MATRIX FOR TEXTILE REINFORCED CONCRETE 

      Autor: Holčapek , Ondřej; Vogel , Filip; Konvalinka , Petr
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      The main objective of this article is to describe the influence of hydrothermal curing conditions in an autoclave device (different pressure and temperature), which took place at various ages of a fresh mixture (cement ...
    • UNSTEADY FLOW OF THIXOTROPIC COLLAGEN SUBSTANCE IN PIPES 

      Autor: Žitný , Rudolf; Landfeld , Aleš; Skočilas , Jan; Štancl , Jaromír; Flegl , Vlastimil; Houška , Milan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Unsteady flow of thixotropic liquid in pipes is solved by 1D and 2D numerical methods using the same constitutive equation — the only difference is in the radial diffusion of the structural parameter. Comparison shows that ...
    • A COMPACTING PROCESS OF THE EN AW 6060 ALLOY 

      Autor: Dragošek , Lukáš; Kociško , Róbert; Kováčová , Andrea; Bidulsky , Robert; Škrobian , Milan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      This study reports on an investigation of factors affect the process of compacting Al chips which are used to direct scrap processing through the forward extrusion method. EN AW 6060 chips of different geometry and types ...
    • EFFECTS OF INITIAL MOISTURE CONTENT ON THE PRODUCTION AND QUALITY PROPERTIES OF SOLID BIOFUEL 

      Autor: Matúš , Miloš; Križan , Peter; Beniak , Juraj; Šooš , Ľubomír
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      The moisture content of densified biomass is a limit parameter influencing the quality of the solid biofuel. It influences its calorific value, density, mechanical strength and dimensional stability as well as the production ...
    • SIMULATION MODEL BASED ON REGIONAL DEVELOPMENT AND VIRTUAL CHANGES 

      Autor: Dlask , Petr
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      This paper reports on change as an indicator that can be provide more focused goals in studies of development. The paper offers an answer to the question: How might management gain information from a simulation model and ...
    • EFFECT OF TUBE PITCH ON HEAR TRANSFER IN SPRINKLED TUBE BUNDLE 

      Autor: Kracík , Petr; Pospíšil , Jiří
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Water flowing on a sprinkled tube bundle forms three basic modes: the Droplet mode (the liquid drips from one tube to another), the Jet mode (with an increasing flow rate, the droplets merge into a column) and the Membrane ...
    • CONDENSATION OF WATER VAPOR IN A VERTICAL TUBE CONDENSER 

      Autor: Havlík , Jan; Dlouhý , Tomáš
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      This paper presents an analysis of heat transfer in the process of condensation of water vapor in a vertical shell-and-tube condenser. We analyze the use of the Nusselt model for calculating the condensation heat transfer ...
    • CHANGES IN THE SURFACE LAYER OF ROLLED BEARING STEEL 

      Autor: Zemčík , Oskar; Sedlák , Josef; Chladil , Josef
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      This paper describes changes observed in bearing steel due to roller burnishing. Hydrostatic roller burnishing was selected as the most suitable method for performing roller burnishing on hardened bearing steel. The ...
    • PYROLYSIS OF BROWN COAL USING A CATALYST BASED ON W–Ni 

      Autor: Jílková , Lenka; Ciahotný , Karel; Kusý , Jaroslav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Tars from pyrolysis of brown coal can be refined to obtain compounds suitable for fuel production. However, it is problematic to refine the liquids from brown coal pyrolysis, because high molecular compounds are produced, ...
    • ELECTRODYNAMIC LOUDSPEAKERDRIVEN ACOUSTIC COMPRESSOR 

      Autor: Šoltés , Martin; Červenka , Milan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      An acoustic compressor is  built  using the acoustic resonator which shape was optimized for a maximum acoustic pressure amplitude and a low-cost compression driver.  Acoustic compressor is built  by installing  a suction ...