Search for dissertations about: "Cold surge"

Showing result 1 - 5 of 6 swedish dissertations containing the words Cold surge.

  2. 1. On Stability and Surge in Turbocharger Compressors

    Author : Bertrand Kerres; Andreas Cronhjort; Mihai Mihaescu; Jörg Seume; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Turbocharger; Radial Compressor; Stability; Surge; Hurst exponent; Fractals; Machine Design; Maskinkonstruktion;

    Abstract : Turbochargers are used on many automotive internal combustion engines to increase power density. The broad operating range of the engine also requires a wide range of the turbocharger compressor. At low mass flows, however, turbo compressor operation becomes unstable and eventually enters surge. READ MORE

  4. 2. Cold water politics : The maritime strategy and geopolitics of the northern front

    Author : Ola Tunander; Linköpings universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Security Politics; Semiotics; Geopolitics; Naval Strategy; US Maritime Strategy; Submarines; Scandinavia; Barents Sea; Norwegian Sea; Diplomatic Signals; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

    Abstract : The dissertation deals with the strategic field of force dominating the Northern waters. Instead of an emphasis on the declared policies of the various nations, the focus here is on geopolitics, technological change and on US and Soviet military strategies influencing the security policies of the Nordic region. READ MORE

  5. 3. Observed and simulated changes in extreme precipitation and cold surges in China: 1961–2005

    Author : Tinghai Ou; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Climate extremes; Precipitation; Cold surge; Siberian High; CMIP5; reanalysis; atmospheric circulation;

    Abstract : In the present work, precipitation and temperature related climate extremes are examined, with a focus on Mainland China. The objectives of this study are a) to identify targeted climate extremes and their changes during the last decades, and b) to examine the ability of current global climate models to reproduce identified patterns of change. READ MORE

  6. 4. Glacial geology and palaeo-ice dynamics of two ice-sheet margins, Taymyr Peninsula, Siberia and Jameson Land, East Greenland

    Author : Helena Alexanderson; Kvartärgeologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ice dynamics; Pleistocene; Arctic Siberia; East Greenland; Sedimentology; Physical geography; Sedimentologi; pedology; geomorphology; klimatologi; kartografi; marklära; geomorfologi; cartography; Fysisk geografi; ice-marginal processes; glacial history; climatology;

    Abstract : The North Taymyr ice-marginal zone (NTZ) on the Taymyr Peninsula, Arctic Siberia and the Ugleelv Valley on Jameson Land, East Greenland, have been investigated with the aim of reconstructing the glacial history, including depositional processes and environments. Geomorphological, sedimentological, stratigraphical and remote sensing methods have been combined to give a comprehensive view of developments in the two areas. READ MORE

  7. 5. Interacting Dirac Matter

    Author : Saikat Banerjee; Alexander V. Balatsky; Jens Paaske; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Dirac; superconductor; magnon; interaction; Fermi liquid theory; renormalization; Fysik; Physics;

    Abstract : The discovery of graphene in 2004 has led to a surge of activities focused on the theoretical and experimental studies of materials hosting linearly dispersive quasiparticles during the last decade. Rapid expansion in the list of materials having similar properties to graphene has led to the emergence of a new class of materials known as the Dirac materials. READ MORE