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Wyszukujesz frazę "steady simulation" wg kryterium: Temat


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Tytuł:
Study of the effect of geometric shape on the quality of mixing: Examining the effect of length of the baffles
Autorzy:
Bouchouicha, Malika Seddik
Laidoudi, Houssem
Hassouni, Souad
Makinde, Oluwole Daniel
Tematy:
baffles
stirred vessel
non-newtonian fluid
steady simulation
CFD
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Powiązania:
https://bibliotekanauki.pl/articles/27312229.pdf  Link otwiera się w nowym oknie
Opis:
This work is an attempt to study the behaviour of fluid in the mixing vessel with a two-bladed or four-bladed impeller. The working fluid is complex, of a shear-thinning type and the Oswald model is used to describe the fluid viscosity. The study was accomplishedby numerically solving the governing equations of momentum and continuity. These equations were solved for the following range of conditions: 50–1000 for the Reynolds number, 0–0.15 for the baffle length ratio, and the number of impeller blades 2 and 4. The simulations were done for the steady state and laminar regime. The results show that the increase in baffle length (by increasing the ratio baffle length ratio) decreases the fluid velocity in the vessel. Increasing the speed of rotation of the impeller and/or increasing the number of blades improves the mixing process. Also, the length of the baffles does not affect the consumed power.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the effect of rotational speed and rheological nature on heat transfer of complex fluid between two cylinders
Autorzy:
Benmansour, Abdelhalim
Laidoudi, Houssem
Tematy:
mixed convection
rheological behavior
steady simulation
CFD
nusselt number
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Powiązania:
https://bibliotekanauki.pl/articles/59111739.pdf  Link otwiera się w nowym oknie
Opis:
This paper presents numerical results for flow behavior between a cold inner cylinder and a hot outer cylinder. Both cylinders are placed horizontally. The space separating the two compartments is completely filled with a fluid of a complex rheological nature. In addition, the outer container is subjected to a constant and uniform rotational speed. The results of this work were obtained after solving the differential equations for momentum and energy. The parameters studied in this research are: the intensity of thermal buoyancy, the speed of rotation of the outer container and the rheological nature of the fluid. These elements are expressed mathematically by the following values: Richardson number (Ri = 0 and 1), Reynolds number (Re = 1 to 40), power-law number (n = 0.8, 1 and 1.4) and Prandtl number (Pr = 50). The results showed that the speed of rotation of the cylinder and the rheological nature of the fluids have an effective role in the process of heat transfer. For example, increasing the rotational speed of the enclosure and/or changing the nature of fluid from shearthickening into shear-thinning fluid improves the thermal transfer rate.
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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