Prohlížení Acta Polytechnica CTU Proceedings. 2018, vol. 20 dle názvu

Zobrazují se záznamy 7-16 z 16

    • EXPERIMENTAL AND NUMERICAL ASSESSMENT OF A LAST STAGE ST BLADE DAMPING AT LOW LOAD OPERATION 

      Autor: Bessone, Andrea; Carassale, Luigi; Guida, Roberto; Kubín, Zdeněk; Lo Balbo, Antonio Alfio; Brunenghi, Michela Marrè; Pinelli, Lorenzo
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      As LP steam turbines are requested to work at strong part-loads, LSB stalled and unstalled flutter may occur. Testing on a downscaled steam turbine in T10MW test plant have been carried out to measure LSB aggregated damping ...

    • EXPERIMENTAL AND NUMERICAL RESEARCH ON FLOW IN THE LAST STAGE OF 1090MW STEAM TURBINE 

      Autor: Hoznedl, Michal; Sedlák, Kamil
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      The paper deals with experimental and numerical research in the last stage of real 1090MW steam turbine with the last steel blade length 1220mm placed in nuclear power station. The last stage was equipped with twelve static ...

    • EXPERIMENTAL AND NUMERICAL STUDY OF CONTROLLED FLUTTER TESTING IN A LINEAR TURBINE BLADE CASCADE 

      Autor: Sláma, Václav; Rudas, Bartoloměj; Eret, Petr; Tsymbalyuk, Volodymyr; Ira, Jiří; Macalka, Aleš; Pinelli, Lorenzo; Vanti, Federico; Arnone, Andrea; Lo Balbo, Antonio Alfio
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      In this paper, experimental testing of flutter and numerical simulations using a commercial code ANSYS CFX and an in-house code TRAF are performed on an oscillating linear cascade of turbine blades installed in a subsonic ...

    • HIGH TEMPERATURE CYCLIC TEST RIG – A NEW RIG FOR HOT GAS PARTS LIFETIME VALIDATION 

      Autor: Ammer, Wieland; Raddatz, Mario; Gampe, Uwe; Nussbaum, Julien; Ruedel, Uwe; Kellerer, Rudolf
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      Flexible gas turbine operation requires adapted hot gas parts design and lifetime assessment methods. The High Temperature Cyclic Test Rig (HTCTR) is developed to cyclically test internally cooled components from combustor ...

    • ISENTROPIC EFFICIENCY OF CENTRIFUGAL COMPRESSOR WORKING WITH REAL GAS 

      Autor: Oldřich, Jiří
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      The contribution deals with calculation of isentropic efficiency and also with calculation of isentropic process of real gas or gaseous mixtures. The method is based on numerical solution of basic definitional equation of ...

    • MARKET AND DEVELOPMENT TRENDS IN COGENERATION AND COMBINED HEAT AND POWER PLANTS 

      Autor: Slad, Jan; Pickard, Andreas; Strobelt, Frank
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      The transition of energy mix in Europe is placing greater focus on energy efficiency. Lawmakers in some of EU countries have already recognized that combined heat and power generation (cogeneration, CHP) can help increase ...

    • REGARDING CERTAIN AERODYNAMIC SOURCES OF NON-STATIONARY FORCE LOADS ON TURBINE PROFILES 

      Autor: Radnic, Tomáš; Luxa, Martin; Šimurda, David
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      The paper deals with selected phenomena present in a blade cascade flow field. The presented research was performed on prismatic blade cascades composed mostly of the tip and root sections of the last stage rotor blade of ...

    • THE EFFECT OF NOTCHES ON THE FATIGUE LIFE OF A NICKEL-BASE GAS TURBINE DISK MATERIAL 

      Autor: Eriksson, Robert; Moverare, Johan; Chen, Zhe; Simonsson, Kjell
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      Gas turbine disks carry significant load under high temperatures and may be subject to fatigue failure. Disks contain several notches in the form of the fir tree blade attachments. Low cycle fatigue tests were performed ...

    • THERMO-MECHANICAL FATIGUE ANALYSIS OF A STEAM TURBINE SHAFT 

      Autor: Nesládek, Martin; Jurenka, Josef; Bartošák, Michal; Růžička, Milan; Lutovinov, Maxim; Papuga, Jan; Procházka, Radek; Džugan, Jan; Měšťánek, Petr
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      Increasing demands on the flexibility of steam turbines due to the use of renewable energy sources substantially alters the fatigue strength requirements of components of these devices. Rapid start-ups as well as the ...

    • TURBOMACHINES 2018 

      Autor: Foreword, Editorial,
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      The Turbostroje / Turbomachines conference has been held regularly since 1999, alternately prepared by A.S.I. Regional Branch in Pilsen and in Prague. In 2018 main topic is "Flexible Fossil Power Plants for the Future ...