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Wyszukujesz frazę "granular flow" wg kryterium: Temat

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Simulations of flow patterns in silos with a cellular automaton: Part 1
    Autorzy:
    Kozicki, J.
    Tejchman, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1965146.pdf
    Data publikacji:
    2005
    Wydawca:
    Politechnika Gdańska
    Tematy:
    cellular automation
    granular flow
    flow pattern
    insert
    silo
    Opis:
    A simplified cellular automaton was used to calculate the kinematics of non-cohesive granular materials during confined flow in silos. In this model, granular flow was assumed to be an upward propagation of holes through a lattice composed of cells representing single particles. Calculations were carried out with different silo shapes and inserts, transition probabilities, migration rules, outflow schemes, grid types, wall roughness and cell numbers. To visualize the calculation process, horizontal layers of various shades were introduced. The simulation results were compared with laboratory tests in model silos.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2005, 9, 1; 81-102
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simulations of flow patterns in silos with a cellular automaton: Part 2
    Autorzy:
    Kozicki, J.
    Tejchman, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1965144.pdf
    Data publikacji:
    2005
    Wydawca:
    Politechnika Gdańska
    Tematy:
    cellular automation
    collisions
    density wave
    granular flow
    flow pattern
    silo
    Opis:
    An improved cellular automaton has been used to calculate the kinematics of non-cohesive granular materials during confined flow in mass and funnel flow model silos. In this model, based on a gas model of hydrodynamics, collisions and dissipation of particles were taken into account during granular flow. The model allowed for investigations of dilatant zones in granular material during silo flow.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2005, 9, 1; 103-114
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of a cellular automata model to granular flow
    Autorzy:
    Kozicki, J.
    Tejchman, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1986936.pdf
    Data publikacji:
    2002
    Wydawca:
    Politechnika Gdańska
    Tematy:
    cellular automata
    granular flow
    silo
    passive state
    active state
    Opis:
    Paper presents the results of simulations of granular flow with a cellular automata model. Flow of granular material behind a moving retaining wall and in a silo with inserts was numerically analysed. Two different migration schemes during flow were assumed. Advantages and limits of the model were outlined.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2002, 6, 3; 429-436
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelling of silo discharge and filling problems by the material point method
    Autorzy:
    Więckowski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1955763.pdf
    Data publikacji:
    2003
    Wydawca:
    Politechnika Gdańska
    Tematy:
    granular flow
    plasticity
    viscoplasticity
    finite element method
    material point method
    Opis:
    The problems of flow of a granular material is the processes of silo discharge and filling are considered. Dynamic, two-dimensional problems are analyzed, both the plane and axisymmetric ones. The material point method is applied as an analytical tool, a variant of the finite element method capable of solving pertinent equations of motion on an arbitrary computational element mesh and tracing state variables at material points chosen independently of the mesh. The mechanical behaviour of a granular material is described with non-associative elastic-perfectly plastic and elastic-viscoplastic material models with the Drucker-Prager yield condition. The influence of friction between the flowing granular body and silo walls is taken into account. The material point method enables one to analyze silos of arbitrary shapes, including silos with inserts controlling the flow of the stored material. The mass and funnel types of flows are analyzed.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2003, 7, 4; 701-721
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Discrete element modelling of industrial granular flow applications
    Autorzy:
    Cleary, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1953967.pdf
    Data publikacji:
    1998
    Wydawca:
    Politechnika Gdańska
    Tematy:
    industrial granular flow applications
    ball mill operation
    dragline bucket filling
    vibrational segregation
    centrifugal mill flow
    slot hopper flow
    idler induced segregation
    cutter bias
    mixing in tumblers
    Opis:
    Discrete element methods for modelling granular flows have now developed sufficiently for them to be applied to complex industrial and mining applications with an expectation that they can predict these flows reasonably well. Furthermore detailed quantitative predictions can be made using these models, allowing them to be validated against carefully designed experiments and then iteratively improved. The models allow existing equipment and processes to be carefully analysed. The resulting enhanced understanding can then be used to help improve them or to create new ones. DEM modelling of a wide range of industrial applications are described in this paper, including ball mill operation, dragline bucket filling, vibrational segregation by size and density, flow in centrifugal mills, flows from slot hoppers, idler induced segregation, cutter bias for commodity samplers and mixing in tumblers.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 1998, 2, 3; 385-415
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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