Sökning: "Non-steady state"

Visar resultat 1 - 5 av 17 avhandlingar innehållade orden Non-steady state.

  1. 1. Elastohydrodynamic lubrication under non-steady conditions

    Författare :Roland Larsson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Sammanfattning : The six papers presented in this thesis consider the effects on elastohydrodynamic lubrication (ehl) of non-steady conditions. The vast majority of ehl investigations, both experiemental and theoretical, utilise steady state conditions, i.e. constant load, velocity, geometry and temperature. LÄS MER

  3. 2. Dynamic Solid Oxide Fuel Cell Modelling for Non-steady State Simulation of System Applications

    Författare :Miriam Kemm; Kraftverksteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; termodynamik; applied thermodynamics; Termisk teknik; Transient analysis; Technological sciences; Teknik; Energy research; Energiforskning; Thermal engineering; Thermal stress; Solid Oxide Fuel Cell; Fuel cell modelling;

    Sammanfattning : Most of the world's energy generation is based on fossil fuels such as coal and oil, which already today but even more in the future, will cause various problems. One issue is their limited availability, which stands in conflict to the increasing global energy consumption. LÄS MER

  4. 3. Study on polymeric inclusion membranes : Transport and characterisation

    Författare :German Salazar-Alvarez; KTH; []
    Nyckelord :Facilitated diffusion; Solvent Extraction; Polymeric Inclusion Membranes; Lead II ; Atomic force microscopy; Thermal analysis; Membrane stability; Activation energy; Non-steady state modelling;

    Sammanfattning : .... LÄS MER

  5. 4. Rail Corrugation Growth on Curves

    Författare :Peter Torstensson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; short-pitch rail corrugation; rotating flexible wheelset model; small radius curves; prediction of long-term roughness growth; plastic deformation; non-Hertzian and non-steady wheel‒rail contact; wear; rutting corrugation;

    Sammanfattning : The development of periodic irregularities with distinct wavelengths (corrugation) on the low rail of small radius curves is studied through mathematical modelling, numerical simulations, field measurements and laboratory investigations. One year of monitoring of roughness on the low rail of a 120 m radius curve on the metro of Stockholm Public Transport (SL) showed severe growth of rail corrugation with wavelengths of about 5 cm and 8 cm. LÄS MER

  7. 5. Lipoproteins in the postprandial state: Studies on the metabolism of triglyceride-rich lipoproteins using multicompartmental models

    Författare :Elias Björnson; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Lipoprotein metabolism; Atherosclerotic cardiovascular disease;

    Sammanfattning : Lipoproteins are lipid-containing spherical particles that circulate in the human blood stream. The reason for their intense study over the decades is their ability to cause atherosclerosis1. LÄS MER