Now showing items 1-20 of 1843

    • 1D HERMITE ELEMENTS FOR C1-CONTINUOUS SOLUTIONS IN SECOND GRADIENT ELASTICITY 

      Author: Liebold, Christian; Müller, Wolfgang H.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      We present a modified strain gradient theory of elasticity for linear isotropic materials in order to account for the so-called size effect. Additional material length scale parameters are introduced and the problem of ...
    • 3-D MODELING OF HEAT AND MASS TRANSFER PROCESS DURING THE COMBUSTION OF SOLID FUEL IN A SWIRL FURNACE 

      Author: Askarova , Aliya; Bolegenova , Saltanat; Maximov , Valeriy; Bolegenova , Symbat; Nugymanova , Aizhan; Šafařík , Pavel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      In this work, a comprehensive study of thermal processes and aerodynamic and concentration characteristics of the combustion chamber of the boiler BKZ-75 of the Shakhtinskaya thermal power plant (Kazakhstan) are presented. ...
    • 3D CFD model for the analysis of the flow field through a horizontal axis wind turbine (HAWT) 

      Author: Menasri, Noureddine; Zergane , Said; Aimeur, Noureddine; Amour, Aissa
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      With the world’s growing demand for energy, renewable energy production has become important in providing alternative sources of energy and in reducing the greenhouse effect. This study investigates the aerodynamics and ...
    • 3D DIGITAL RECONSTRUCTION BASED ON ARCHIVED TERRESTRIAL PHOTOGRAPHS FROM METRIC CAMERAS 

      Author: Poloprutský, Zdeněk; Fraštia, Marek; Marčiš, Marián
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      The paper deals with the possibilities and limitations of the image processing of digitalized terrestrial photographs from analogue metric cameras. By the end of the 20th century, analogue metric cameras such as Zeiss UMK ...
    • 3D FEM ANALYSIS OF THE CONSTRUCTION PIT FOR A TBM-DRIVEN FLOOD DISCHARGE GALLERY 

      Author: Hohberg, Jörg-Martin
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      As one speciality of the Swiss hydraulic engineering tradition, several torrent diversion schemes were undertaken dating from the 18th century, with the aim of using the natural lake as a retention basin. The recent project ...
    • 3d finite element simulation of reinforced concrete column strengthened by partially confined carbon fibre reinforced polymer under concentric loading 

      Author: Ahmad Zakwan, Fariz Aswan; Ismail, Ruqayyah; Ahmad, Hazrina; Muhammad Rashid, Raizal Saifulnaz
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      In this paper, numerical simulation initiated to investigate the mechanical response of reinforced concrete (RC) column strengthened by partially confined carbon fiber reinforced polymer (CFRP). An experimental investigation ...
    • A BOSE-EINSTEIN CONDENSATE WITH PT-SYMMETRIC DOUBLE-DELTA FUNCTION LOSS AND GAIN IN A HARMONIC TRAP: A TEST OF RIGOROUS ESTIMATES 

      Author: Haag , Daniel; Cartarius , Holger; Wunner , Günter
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      We consider the linear and nonlinear Schrödinger equation for a Bose-Einstein condensate in a harmonic trap with PT-symmetric double-delta function loss and gain terms. We verify that the conditions for the applicability ...
    • A CASE FOR DOMAIN-INDEPENDENT DETERMINISTIC MULTIAGENT 

      Author: Štolba, Michal
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      The notion of planning using multiple agents has been around since the very beginning of planning itself. It has been approached from various viewpoints especially in the multiagent systems community. Recently, domain-independent ...
    • A case study of implementing a renovation concept 

      Author: Haase, Matthias
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      There is an untapped potential for reducing GHG emissions by district renovation. It needs a detailed Energy Master Planning (EMP) of the district and support for the decision-making processes. If applied in a comprehensive ...
    • A combined strain element to functionally graded structures in thermal environment 

      Author: Ton-That , Hoang Lan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      Functionally graded materials are commonly used in a thermal environment to change the properties of constituent materials. They inherently withstand high temperature gradients due to a low thermal conductivity, core ...
    • A COMPACTING PROCESS OF THE EN AW 6060 ALLOY 

      Author: 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 ...
    • A comparative experimental investigation of high-temperature effect on fibre concrete and high strength concrete using UT and CM methods 

      Author: Royaei, Javad; Sadeghi, Kabir; Nouban, Fatemeh
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      In this paper, a 28-day compressive strength test has been performed on samples including normal fibre concrete and high-strength concrete. The ultrasonic test (UT) as a non-destructive and compression machine (CM) as a ...
    • A COMPARATIVE STUDY OF DATA-DRIVEN MODELING METHODS FOR SOFT-SENSING IN UNDERGROUND COAL GASIFICATION 

      Author: Kačur, Ján; Durdán, Milan; Laciak, Marek; Flegner, Patrik
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      Underground coal gasification (UCG) is a technological process, which converts solid coal into a gas in the underground, using injected gasification agents. In the UCG process, a lot of process variables can be measurable ...
    • A comparative study of ferrofluid lubrication on double-layer porous squeeze curved annular plates with slip velocity 

      Author: 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 ...
    • A COMPARISON OF METHODS USING STRAIN GAUGES TO MONITOR PHYSIOLOGICAL MOVEMENTS ON A HOSPITAL BED 

      Author: Socha , Vladimír; Kutílek , Patrik; Smrčka , Pavel; Socha , Luboš
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      Two methods which are suitable to monitor the small movements of the patient in a horizontal position on the bed are compared. The methods use sensors based on strain gauge bridges configured to measure the torsion deformation ...
    • A Comparison of Power Quality Controllers 

      Author: Černek , Petr; Brejcha , Michal; Hájek , Jan; Pígl , Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      This paper focuses on certain types of FACTS (Flexibile AC Transmission System) controllers, which can be used for improving the power quality at the point of connection with the power network. It focuses on types of ...
    • A COMPARISON OF TESTING METHODS FOR DETERMINATION OF SPRAYED CONCRETE TENSILE STRENGTH 

      Author: Závacký, Martin
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      Sprayed concrete is important construction material in tunnelling. Primary lining is essential in NATM where the sprayed concrete can be loaded by tension due to bending moments. The tension is common reason of failure ...
    • A COMPARISON OF THE TENSILE STRENGTH OF PLASTIC PARTS PRODUCED BY A FUSED DEPOSITION MODELING DEVICE 

      Author: Beniak , Juraj; Križan , Peter; Matúš , Miloš
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Rapid Prototyping systems are nowadays increasingly used in many areas of industry, not only for producing design models but also for producing parts for final use. We need to know the properties of these parts. When we ...
    • A COMPARISON OF TWO MODAL ANALYSIS METHODS: AN IMPACT HAMMER VERSUS LASER VIBROMETRY 

      Author: Krejčí , Jakub; Beneš , Petr
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      This paper presents a comparative experimental-analytical study on the performance of Multi-Input Single-Output (MISO) and Single-Input Multi-Output (SIMO) techniques to identify the modal properties of a cantilever beam. ...
    • A COMPUTER CLUSTER SYSTEM FOR PSEUDO-PARALLEL EXECUTION OF GEANT4 SERIAL APPLICATION 

      Author: Federici, Memmo; Martino, Bruno L.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      Simulation of the interactions between particles and matter in studies for developing X-rays detectors generally requires very long calculation times (up to several days or weeks). These times are often a serious limitation ...