Search for dissertations about: "natural convection boundary layer"

Showing result 16 - 20 of 24 swedish dissertations containing the words natural convection boundary layer.

  2. 16. The Polar Cusp and its Ionospheric footprint : Dynamics and Transients

    Author : Frédéric Pitout; Ryoichi Fujii; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Space and plasma physics; Solar wind - magnetosphere - ionosphère interactions; polar ionosphere; Rymd- och plasmafysik; Space physics; Rymdfysik; Space Physics; rymdfysik;

    Abstract : The magnetopause, the boundary layer between the solar wind and the Earth’s magnetosphere, is not closed as we have long thought. Transfers of energy, particles and momentum from the solar wind to the magnetosphere actually take place. READ MORE

  4. 17. Computation of Thermal Development in Injection Mould Filling, based on the Distance Model

    Author : Per-Åke Andersson; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; thermoplastic materials; finite element FEM ; finite difference FD ; Newton-Mysovskii theorem; Moldflow Mfl ; Cadmould Cmd ; MATHEMATICS; MATEMATIK;

    Abstract : The heat transfer in the filling phase of injection moulding is studied, based on Gunnar Aronsson’s distance model for flow expansion ([Aronsson], 1996).The choice of a thermoplastic materials model is motivated by general physical properties, admitting temperature and pressure dependence. READ MORE

  5. 18. Origin of solar surface activity and sunspots

    Author : Sarah Jabbari; Axel Brandenburg; Laurene Jouve; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Magneto-hydrodynamics; solar physics; dynamo theory; Astronomy; astronomi;

    Abstract : Sunspots and active regions are two of the many manifestations of the solar magnetic field. This field plays an important role in causing phenomena such as coronal mass ejections, flares, and coronal heating. Therefore, it is important to study the origin of sunspots and active regions and determine the underlying mechanism which creates them. READ MORE

  6. 19. Modeling and analysis of heat and mass transfer processes during in-vessel melt progression stage of light water reactor (LWR) severe accidents

    Author : Robert R. Nourgaliev; KTH; []
    Keywords : ;

    Abstract : The last two decades of nuclear industry are marked byconsiderable attention tonuclear power plant accidents with core meltdown, knownalsoas severe accidents(SA). Two wellknown severeaccidents, TMI (USA, 1979) and Chernobyl (USSR, 1986), igniteda new wave of publit cancern about safety of existing nuclearpower plants. READ MORE

  7. 20. Mathematical and physical modelling of fluid flow and heat transfer in steel ladles during holding and teeming

    Author : Yuhua Pan; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Process Metallurgy; Processmetallurgi;

    Abstract : Fluid flow and heat transfer in industrial steel ladles during holding and teeming periods were simulated by using three mathematical numerical models and a physical hot-water model. Firstly, based on a finite-difference method, a one-dimensional heat conduction numerical model was established for predicting the heat loss fluxes through ladle wall, bottom and top slag layer. READ MORE