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Wyszukujesz frazę "Youcefi, A." wg kryterium: Autor


Wyświetlanie 1-2 z 2
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:
Improved of Mechanical Characteristics of Gargar Mud by Mineral Additives
Autorzy:
Mokhtari, Fouzia B. Z.
Youcefi, Abdelkader
Driss, A.A.E.
Ghrici, Mohamed
Powiązania:
https://bibliotekanauki.pl/articles/27314865.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
Gargar dam
mud
lime
pozzolana
mineral additives
tama Gargar
błoto gargarowe
wapno
pucolana
dodatki mineralne
Opis:
The operational dams in Algeria lose 32 million m 3 of water storage capacity each year, and fifteen of these dams are threatened by siltation. This investigation forms a component of a management strategy for dredged silt in the Gargar Dam, the third-largest dam in Algeria with considerable sedimentation. This paper comprises two main axes: a detailed experimental study based on the studied dam mud's physico-chemical, rheological, and mechanical analysis. The second part is based on the study of the valorization of Gargar mud to be acceptable for use in road civil engineering. In order to obtain this goal, the Gargar mud was treated with lime (0-6%), sand (20%), and natural pozzolana (20%). Test results show that the properties of Gargar mud are significantly improved after treatment, and the soil becomes more friable and more resistant; it can therefore be used as a foundation layer in road civil engineering.
Źródło:
Civil and Environmental Engineering Reports; 2023, 33, 4; 73--94
2080-5187
2450-8594
Pojawia się w:
Civil and Environmental Engineering Reports
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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