Prohlížení Acta Polytechnica. 2020, vol. 60, no.1 dle názvu

Zobrazují se záznamy 1-9 z 9

    • ANALYSIS OF STATIC ANGLE OF REPOSE WITH RESPECT TO POWDER MATERIAL PROPERTIES 

      Autor: Macho , Oliver; Demková , Karin; Gabrišová , Ľudmila; Čierny , Matúš; Mužíková , Jitka; Galbavá , Paulína; Nižnanská , Žofia; Blaško , Jaroslav; Peciar , Peter; Fekete , Roman; Peciar , Marián
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      This paper investigates the Angle of Repose (AoR) of powder materials with respect to their morphological and rheological properties. Glass beads, sand, flour and semolina of different particle sizes were used as the ...

    • EIGENVALUES EVALUATION OF GENERALLY DAMPED ELASTIC DISC BRAKE MODEL LOADED WITH NON-CONSERVATIVE FRICTION FORCE 

      Autor: Úradníček , Juraj; Musil , Miloš; Bachratý , Michal
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      This paper deals with the evaluation of eigenvalues of a linear damped elastic two-degrees-of-freedom system under a non- onservative loading. As a physical interpretation of a proposed mathematical model, a simplified ...

    • ENERGY GAIN FROM ERROR-CORRECTING CODING IN CHANNELS WITH GROUPING ERRORS 

      Autor: Kuznetsov , Alexandr; Oleshko , Oleg; Kuznetsova , Kateryna
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      Abstract. This article explores the a mathematical model of the a data transmission channel with errors grouping. We propose an estimating method for energy gain from coding and energy efficiency of binary codes in channels ...

    • HOMOGENIZATION OF TRANSPORT PROCESSES AND HYDRATION PHENOMENA IN FRESH CONCRETE 

      Autor: Beneš , Michal; Štefan , Radek
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      The problem of hydration and transport processes in fresh concrete is strongly coupled and non- inear, and therefore, very difficult for a numerical modelling. Physically accurate results can be obtained using fine-scale ...

    • ON CFD INVESTIGATION OF RADIAL CLEARANCE OF LABYRINTH SEALS OF A TURBINE ENGINE 

      Autor: Čížek , Michal; Pátek , Zdeněk
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      Fluid flow in labyrinth seals of a turbine engine is described. The aim is to describe numerical calculations of fluid flow in labyrinth seals and evaluate the calculated data for different settings of radial clearance of ...

    • PARALLELIZATION OF ASSEMBLY OPERATION IN FINITE ELEMENT METHOD 

      Autor: Bošanský , Michal; Patzák , Bořek
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      The efficient codes can take an advantage of multiple threads and/or processing nodes to partition a work that can be processed concurrently. This can reduce the overall run-time or make the solution of a large problem ...

    • PERFORMANCE ANALYSIS OF QUADRATURE CHAOS SHIFT 

      Autor: Alabbasi , Hesham Adnan; Abboud , Izz Kadhum; Hasan , Fadhil Sahib
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      One of the most famous techniques of non-coherent differential chaos shift keying (DCSK) is Quadrature chaos shift keying (QCSK) system, this system suffered from lowering the data rate and increasing the bit energy during ...

    • SUITABLE PRODUCTION TOOLS SELECTION WITH THE USE OF EVOLUTIONARY ALGORITHMS 

      Autor: Hynek , Petr; Kreibich , Viktor; Firt , Roman
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      This paper deals with the use of a production equipment simulation in the design of production systems, more specifically the welding equipment in the automotive industry. Based on the simulation results, a matrix, which ...

    • THE EFFECT OF THE FILLING RATIO ON THE OPERATING CHARACTERISTICS OF AN INDIRECT DRUM DRYER 

      Autor: Havlík , Jan; Dlouhý , Tomáš; Sabatini , Michel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      This article investigates the effect of the filling ratio of the indirect rotary dryers on their operating characteristics. For moist biomass drying before combustion, the use of indirect drum dryers heated by a low pressure ...