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Wyszukujesz frazę "Ameur, H." wg kryterium: Autor

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    Wyświetlanie 1-4 z 4
    Tytuł:
    A new geometrical model for mixing of highly viscous fluids by combining two-blade and helical screw agitators
    Autorzy:
    Hadjeb, A.
    Bouzit, M.
    Kamla, Y.
    Ameur, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/778233.pdf
    Data publikacji:
    2017
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    CFD
    helical agitator
    highly viscous fluid
    stirred tank
    two blade agitator
    Opis:
    Mixing processes are becoming today a huge concern for industrialists in various domains like the pharmaceutical production, oil refining, food industry and manufacture of cosmetic products especially when the processes are related to the mixing of highly viscous products. So the choice of a stirring system for this category of products or fluids must be rigorously examined before use because of the flows which are laminar in the most cases, something that is not good to obtain homogeneous particles or suspensions after the mixing operation. This CFD study allows developing a new geometrical model of mechanical agitator with high performance for mixing of highly viscous fluids. It consists of a combination of two bladed and helical screw agitators. The investigations of the flow structure generated in the vessel are made by using the computer code ANSYS CFX (version 13.0), which allows us to realize and test the effectiveness of the new stirrer on the resulting mixture and power consumption.
    Źródło:
    Polish Journal of Chemical Technology; 2017, 19, 3; 83-91
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of some design parameters on the flow fields and power consumption in a vessel stirred by a rushton turbine
    Autorzy:
    Youcefi, S.
    Bouzit, M.
    Ameur, H.
    Kamla, Y.
    Youcefi, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/185434.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    CFD modeling
    mixing
    cylindrical tank
    internal baffles
    external slots
    vortex
    modelowanie CFD
    mieszanie
    zbiornik cylindryczny
    przegroda wewnętrzna
    gniazdo zewnętrzne
    wir
    Opis:
    Knowledge of the fluid dynamic characteristics in a stirred vessel is essential for reliable design and scale-up of a mixing system. In this paper, 3D hydrodynamics in a vessel agitated by a Rushton turbine were numerically studied (with the help of a CFD computer program (CFX 13.0)). The study was carried out covering a wide Reynolds number range: 104 – 105. Computations, based on control volume method, were made using the k-. model. Our main purpose was to investigate the effect of vessel configuration and agitation rates on the flow structure and power consumption. Three types of vessels were used: unbaffled, baffled and a vessel with slots placed at the external perimeter of its vertical wall. The effect of slot length has been investigated. The comparison of our predicted results with available experimental data shows a satisfactory agreement.
    Źródło:
    Chemical and Process Engineering; 2013, 34, 2; 293-307
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical investigation of the turbulent flow generated with a radial Turbine using a converging hollow blade
    Autorzy:
    Beloudane, M.
    Bouzit, M.
    Ameur, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/778815.pdf
    Data publikacji:
    2018
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    converging hollow
    deep
    radial flow
    turbulent flow
    stirred tank
    Opis:
    The aim of this study is to investigate the effect of the blade shape on the characteristic of the flow patterns in a stirred tank. A new impeller blade design has been proposed. It is characterized by a converging hollow. The investigations of the flow structure generated in the vessel are made by using the computer code ANSYS CFX (version 16.0). The analysis has shown that the converging hollow blade yields highly radial flows which gave an increase in the radial velocity by 35% with less power consumption than the flat blade. Also, the effectiveness of the energy dissipation and the quality of mixing has been obviously noted. A validation test of our predicted results with other literature data was done, and a satisfactory agreement has been found.
    Źródło:
    Polish Journal of Chemical Technology; 2018, 20, 4; 129-137
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical study of fluid flow and power consumption in a stirred vessel with a Scaba 6SRGT impeller
    Autorzy:
    Ameur, H.
    Bouzit, M.
    Helmaoui, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/185604.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    wirnik Scaba
    numeryczne badania 3D
    przepływ nienewtonowski
    3D numerical study
    non-Newtonian fluid
    stirred vessel
    Scaba impeller
    impeller eccentricity
    Opis:
    The present work deals with agitation of non-Newtonian fluids in a stirred vessel by Scaba impellers. A commercial CFD package (CFX 12.0) was used to solve the 3D hydrodynamics and to characterise at every point flow patterns especially in the region swept by the impeller. A shear thinning fluid with yield stress was modelled. The influence of agitator speed, impeller location and blade size on the fluid flow and power consumption was investigated. The results obtained are compared with available experimental data and a good agreement is observed. It was found that an increase in blade size is beneficial to enlargement of the well stirred region, but that results in an increased power consumption. A short distance between the impeller and the tank walls limits the flow around the agitator and yields higher power consumption. Thus, the precise middle of the tank is the most appropriate position for this kind of impeller.
    Źródło:
    Chemical and Process Engineering; 2011, 32, 4; 351-366
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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