Procházení Acta Polytechnica. 2022, vol. 62, no.4 dle data publikování

Zobrazují se záznamy 1-10 z 10

    • A comparative study of ferrofluid lubrication on double-layer porous squeeze curved annular plates with slip velocity 

      Autor: Patel, Niru C.; Patel, Jimit R.; Deheri, Gunamani M.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      This article makes an effort to present a comparative study on the performance of a Shliomis model-based ferrofluid (FF) lubrication of a porous squeeze film in curved annular plates taking slip velocity into account. The ...

    • Performance of a hydromagnetic squeeze film on a rough circular step bearing: a comparision of different porous structures 

      Autor: Adeshara, Jatinkumar V.; Patel, Hardik P.; Deheri, Gunamani B.; Patel, Rakesh M.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      This investigation deals with a comparative analysis of the impact of spongy structure based on the model of Kozeny-Carman and Irmay on a hydromagnetic squeeze film in a rough circular step bearing. Christensen and Tonder’s ...

    • A model of isotope transport in the unsaturated zone, case study 

      Autor: Chudoba, Josef; Královcová, Jiřina; Landa, Jiří; Maryška, Jiří; Říha, Jakub
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      This work deals with a groundwater flow and solute transport model in the near-surface (predominantly unsaturated) zone. The model is implemented so that it allows simulations of contamination transport from a source located ...

    • Functional aerodynamics and its influence on the energy and thermal mode of a naturally ventilated double-skin transparent façade 

      Autor: Franek, Michal; Bielek, Boris; Macák, Marek; Klem, Josip
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      This article deals with the dynamics of airflow through a cavity. In windless conditions, where a natural flow causes the flow of air in the cavity, the overall aerodynamic resistance of the cavity is the important aerodynamic ...

    • Active disturbance rejection control-based anti-coupling method for conical magnetic bearings 

      Autor: Nguyen, Danh Huy; Vu, Minh Le; Trong , Hieu Do; Nguyen, Danh Giang; Nguyen, Tung Lam
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      Conical-shape magnetic bearings are currently a potential candidate for various magnetic force-supported applications due to their unique geometric nature reducing the number of required active magnets. However, the bearing ...

    • Evaluation of residual strength of polymeric yarns subjected to previous impact loads 

      Autor: Hahn, Gabriela; Monteiro da Fonseca Thomé da Silva, Antônio Henrique; Tempel Stumpf, Felipe; Marcos Guilherme, Carlos Eduardo
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      The discovery of oil fields in deep and ultra-deep waters provided an opportunity to evaluate the use of  synthetic ropes, complementarily or alternatively to traditional steel-based mooring lines in offshore units, mainly ...

    • Determination of loads on the body of a boxcar with elastic elements in the center sill 

      Autor: Fomin, Oleksij; Glib, Vatulia; Alyona, Lovska
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      The authors suggest elastic elements in the body of a centre sill being the basic carrying element of the frame to decrease the dynamic loads. This solution can transform the dynamic loads on the body into the work of the ...

    • Measurement of a quantum particle position at two distant locations: a model 

      Autor: Dittrich, Jaroslav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      A simplified one-dimensional model of measurement of the position of a quantum particle by two distant detectors is considered. Detectors are modelled by quantum particles bounded in potential wells with just two bound ...

    • Disinfection performance of an ultraviolet lamp: a CFD investigation 

      Autor: Bui, Cuong Mai; Phan, Nguyen Duy Minh; Tran, Ngo Quoc Huy; Doan, Le Anh; Vo, Quang Truong; Tran, Duy Chung; Nguyen, Thi Thanh Vi; Nguyen, Duc Long; Huynh, Van Sanh; Ho, Tran Anh Ngoc
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      Ultraviolet (UV)-based devices have shown their effectiveness on various germicidal purposes. To serve their design optimisation, the disinfection effectiveness of a vertically cylindrical UV lamp, whose wattage ranges ...

    • CFD simulation of partial channel blockage on plate-type fuel of TRIGA-2000 conversion reactor core 

      Autor: Dibyo, Sukmanto; Luthfi, Wahid; Pinem, Surian; Irianto, Ign Djoko; Sriwardhani, Veronica Indriati
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      A nuclear reactor cooling system that has been operating for a long time can carry some debris into a fuel coolant channel, which can result in a blockage. An in-depth two-dimensional simulation of partial channel blockage ...