A study of mixing structure in stirred tanks equipped with multiple four-blade rushton impellers

• Autorzy: Driss Z. , Karray S. , Chtourou W. , Kchaou H. , Salah Abid M.

Warianty tytułu

PL

Badanie struktury mieszania w zbiorniku z mieszadłem w systemie wielowirnikowym z czteropłatkowymi wirnikami Rushtona

• Języki publikacji: EN

Abstrakty

EN

The effect of multiple Rushton impellers configurations on hydrodynamics and mixing performance in a stirred tank has been investigated. Three configurations defined by one, two and three Rushton impellers are compared. Results issued from our computational fluid dynamics (CFD) code are presented here concerning fields of velocity components and viscous dissipation rate. These results confirm that the multi-impellers systems are necessary to decrease the weaken zones in each stirred tanks. The experimental results developed in this work are compared with our numerical results. The good agreement validates the numerical method.

PL

W pracy badano efekt konfiguracji wielołopatkowych wirników Rushtona na hydrodynamikę i skuteczność mieszania w zbiorniku z mieszadłem. Porównano trzy konfiguracje mieszadła, zdefiniowane przez jeden, dwa lub trzy wirniki Rushtona. W artykule zaprezentowano wyniki, uzyskane przy użyciu własnego oprogramowania do obliczeń dynamiki płynów (CFD), dotyczące składników pól prędkości i szybkości dyssypacji lepkościowej. Wyniki te potwierdzają, że systemy wielowirnikowe są niezbędne dla zmniejszenia stref zubożonych w każdym zbiorniku z mieszadłem. Wyniki eksperymentalne, uzyskane w tej pracy, są porównane z wynikami obliczeń numerycznych. Dobra zgodność wyników potwierdza przydatność metody numerycznej.

Słowa kluczowe

EN

multiple Rushton impellers; four blades; six blades; stirred tank; numerical method; modelling

PL

system wielowirnikowy z wirnikami Rushtona; cztery łopatki; sześć łopatek; zbiornik z mieszadłem; metoda numeryczna; modelowanie

• Wydawca: Komitet Budowy Maszyn PAN
• Czasopismo: Archive of Mechanical Engineering
• Rocznik: 2012
• Tom: Vol. LIX, nr 1
• Strony: 53--72
• Opis fizyczny: Bibliogr. 28 poz., fot., rys., tab.

Twórcy

autor

Driss Z.

autor

Karray S.

autor

Chtourou W.

autor

Kchaou H.

autor

Salah Abid M.

• Laboratory of Electro-Mechanic Systems (LASEM), National School of Engineers of Sfax (ENIS), University of Sfax (US), B.P. 1173, Road Soukra. km 3.5. 3038 Sfax, Tunisia,

Bibliografia

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