Sökning: "numerical modelling"

Visar resultat 1 - 5 av 579 avhandlingar innehållade orden numerical modelling.

  1. 1. Numerical Modelling of Fuel Sprays

    Detta är en avhandling från LTH, Lund University

    Författare :Christer Bergström; [1999]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vibration and acoustic engineering; vacuum technology; hydraulics; Mechanical engineering; Gas turbine.; Temperature fluctuations. Diesel engine; Counter rotating Vortex Pair; CVP; Large Eddy Simulation; Droplet Evaporation; Turbulent flows; LES; Spray; Modelling; Break-up; Maskinteknik; hydraulik; vakuumteknik; vibrationer; akustik; Carbochemistry; petrochemistry; fuels and explosives technology; Petrokemi; bränslen; sprängämnen;

    Sammanfattning : The way the fuel is introduced into the combustion chamber is one of the most important parameters for the power output and the generation of emissions in the combustion of liquid fuels. The interaction beween the turbulent gas flow field and the liquid fuel droplets, the vaporisation of them and the mixing of the gaseous fuel with the ambient air that are vital parameters in the combustion process. LÄS MER

  2. 2. Study of precipitation in martensitic Fe-C-Cr alloys during tempering Experiments and modelling

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Ziyong Hou; Joakim Odqvist; Andersson Jörgen; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fe-C-Cr alloy; Microstructure; Precipitates; Tempering of martensite; Electron microscopy; Modelling.; Materials Science and Engineering; Teknisk materialvetenskap;

    Sammanfattning : Understanding the precipitation reaction is very important since precipitation hardening is one of the most effective strengthening mechanisms in metallic alloys. In martensitic steels, a tempering heat treatment is often performed. LÄS MER

  3. 3. Stability of tailings dams focus on numerical modelling

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Muhammad Auchar Zardari; [2011]

    Sammanfattning : Upstream tailings dams may experience slope stability problems when the rate of raising is too fast. Tailings consolidate slowly due to low hydraulic conductivity. The excess pore pressures can build up due to accelerated rate of raising. LÄS MER

  4. 4. Numerical modelling of diapirism : influence of topography, sedimentation, erosion and viscoelastic-plastic rheologies

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Alexei Nickolaevich Poliakov; [1993]

    Sammanfattning : .... LÄS MER

  5. 5. Numerical modelling of the Cordilleran ice sheet

    Detta är en avhandling från Stockholm : Department of Physical Geography and Quaternary Geology, Stockholm University

    Författare :Julien Seguinot; Arjen Stroeven; Shawn Marshall; [2014]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Numerical modelling; Cordilleran ice sheet; last glacial cycle; Physical Geography; naturgeografi;

    Sammanfattning : This doctoral dissertation presents a study of the glacial history of the North American Cordillera using numerical ice sheet modelling calibrated against field evidence. This area, characterized by the steep topography of several mountain ranges separated by large inter-montane depressions, was once covered by a large-scale ice mass: the former Cordilleran ice sheet. LÄS MER