Sökning: "rotor dynamics"

Visar resultat 16 - 20 av 50 uppsatser innehållade orden rotor dynamics.

  1. 16. Partially Parabolic Wind Turbine Flow Modelling

    Master-uppsats, KTH/Mekanik

    Författare :Sebastian Haglund El Gaidi; [2018]
    Nyckelord :Wind turbine flow; Single wind turbine; Computational fluid dynamics; Partially parabolic Navier-Stokes equations; Finite difference method.;

    Sammanfattning : Climate change is an evermore urging existential treat to the human enterprise. Mean temperature and greenhouse gas emissions have in-creased exponentially since the industrial revolution. But solutions are also mushrooming with exponential pace. LÄS MER

  3. 17. A Weak Formulation of Constraints to Couple Rigid and Elastic Bodies - a Study with FEniCS

    Master-uppsats, Lunds universitet/Matematik LTH

    Författare :Axel Södersten; [2018]
    Nyckelord :Flexible multibody dynamics; differential-algebraic equations; interconnecting rigid joints; Mathematics and Statistics; Technology and Engineering;

    Sammanfattning : Many complex mechanical systems are simplified by considering them as multibody systems. In recent years, flexible multibody dynamics has become more and more in demand. LÄS MER

  4. 18. Investigation of performance and surge behavior of centrifugal compressors through CFD simulations

    Master-uppsats, KTH/Mekanik

    Författare :Francesco Tosto; [2018]
    Nyckelord :centrifugal compressor; Computational Fluid Dynamics CFD ; RANS; surge; compressible uid dynamics; Design of Experiments DoE .; centrifugalkompressor; CFD-simulering; RANS; overskott; komprimerbar vatskedynamik; Design of Experiments DoE ;

    Sammanfattning : The use of turbocharged Diesel engines is nowadays a widespread practice in the automotive sector: heavy-duty vehicles like trucks or buses, in particular, are often equipped with turbocharged engines. An accurate study of the flow field developing inside both the main components of a turbocharger, i.e. LÄS MER

  5. 19. CFD calculations and comparison with measured data in a film cooled 1.5 stage high pressure test turbine : With two configurations of swirlers clocking

    Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Ellen Hallbäck; [2018]
    Nyckelord :Turbine; CFD; Clocking configuration; Turbin; CFD; virvlareposition;

    Sammanfattning : The gas turbine has an important role for the energy distribution due to its stability and flexibility. By increasing turbine inlet temperature (TIT) an increased thermal efficiency of the turbine can be achieved. The biggest limitation of the TIT is the material of the turbine components. LÄS MER

  7. 20. Sensitivity Analysis in 3D Turbine CFD

    Master-uppsats, KTH/Mekanik

    Författare :Simon Kern; [2017]
    Nyckelord :;

    Sammanfattning : A better understanding of turbine performance and its sensitivity to variations in the inletboundary conditions is crucial in the quest of further improving the efficiency of aero engines.Within the research efforts to reach this goal, a high-pressure turbine test rig has been designedby Rolls-Royce Deutschland in cooperation with the Deutsches Zentrum für Luft- und Raumfahrt(DLR), the German Aerospace Center. LÄS MER