Sökning: "Olov Ågren"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Olov Ågren.

  1. 1. Kinetic studies on twodimensional equilibria and on hydrogen and oxygen neutrals

    Författare :Olov Ågren; Uppsala universitet; []

    Sammanfattning : .... LÄS MER

  2. 2. Analytical Aerodynamic Simulation Tools for Vertical Axis Wind Turbines

    Författare :Paul Deglaire; Hans Bernhoff; Olov Ågren; Staffan Lundstrom; Uppsala universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vertical axis turbine; vortex flows; conformal mapping; analytical aerodynamics; potential flows; fast multipole methods; Fluid mechanics; Strömningsmekanik; Teknisk fysik; Engineering Science;

    Sammanfattning : Wind power is a renewable energy source that is today the fastest growing solution to reduce CO2 emissions in the electric energy mix. Upwind horizontal axis wind turbine with three blades has been the preferred technical choice for more than two decades. This horizontal axis concept is today widely leading the market. LÄS MER

  3. 3. Fluid Mechanics of Vertical Axis Turbines : Simulations and Model Development

    Författare :Anders Goude; Olov Ågren; Carlos Simão Ferreira; Uppsala universitet; []
    Nyckelord :Wind power; Marine current power; Vertical axis turbine; Wind farm; Channel flow; Simulations; Vortex model; Streamtube model; Control system; Graphics processing unit; CUDA; Fast multipole method; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Sammanfattning : Two computationally fast fluid mechanical models for vertical axis turbines are the streamtube and the vortex model. The streamtube model is the fastest, allowing three-dimensional modeling of the turbine, but lacks a proper time-dependent description of the flow through the turbine. LÄS MER

  4. 4. Coil Design and Related Studies for the Fusion-Fission Reactor Concept SFLM Hybrid

    Författare :Anders Hagnestål; Olov Ågren; Vladimir Moiseenko; Ladislav Bardos; Jan Scheffel; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Fusion; Fission; Hybrid reactor; Actinides; Mirror Machine; Quadrupolar mirror; Coils; Fysik; Physics;

    Sammanfattning : A fusion-fission (hybrid) reactor is a combination of a fusion device and a subcritical fission reactor, where the fusion device acts as a neutron source and the power is mainly produced in the fission core. Hybrid reactors may be suitable for transmutation of transuranic isotopes in the spent nuclear fuel, due to the safety margin on criticality imposed by the subcritical fission core. LÄS MER

  5. 5. MHD Stability and Confinement of Plasmas in a Single Mirror Cell

    Författare :Natalia Savenko; Olov Ågren; Per Helander; Uppsala universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Engineering physics; MHD; plasma confinement; magnetic mirror; adiabatic particle motion; adiabatic invariants; Teknisk fysik; Engineering physics; Teknisk fysik;

    Sammanfattning : Thermonuclear fusion is a promising energy source for the future. If an economically efficient thermonuclear reactor would be built it has to be a cheap, safe, and highly productive electric power plant, or, a heating plant. LÄS MER