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Titolo:
AN LDA STUDY OF THE TURBULENT-FLOW FIELD IN A BAFFLED VESSEL AGITATEDBY AN AXIAL, DOWN-PUMPING HYDROFOIL IMPELLER
Autore:
JAWORSKI Z; NIENOW AW; DYSTER KN;
Indirizzi:
UNIV BIRMINGHAM,SCH CHEM ENGN BIRMINGHAM B15 2TT W MIDLANDS ENGLAND UNIV BIRMINGHAM,SCH MFG & MECH ENGN BIRMINGHAM B15 2TT W MIDLANDS ENGLAND
Titolo Testata:
Canadian journal of chemical engineering
fascicolo: 1, volume: 74, anno: 1996,
pagine: 3 - 15
SICI:
0008-4034(1996)74:1<3:ALSOTT>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
LASER-DOPPLER MEASUREMENTS; PITCHED BLADE TURBINES; RUSHTON TURBINE; NEWTONIAN FLUIDS; STIRRED REACTORS; GAS DISPERSION; PERFORMANCE; CIRCULATION; ANEMOMETER; POWER;
Keywords:
LDA; STIRRED TANK; TURBULENT FLOW; HYDROFOIL IMPELLERS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
53
Recensione:
Indirizzi per estratti:
Citazione:
Z. Jaworski et al., "AN LDA STUDY OF THE TURBULENT-FLOW FIELD IN A BAFFLED VESSEL AGITATEDBY AN AXIAL, DOWN-PUMPING HYDROFOIL IMPELLER", Canadian journal of chemical engineering, 74(1), 1996, pp. 3-15

Abstract

The turbulent flow of water in a cylindrical, baffled vessel with an axial flow hydrofoil impeller, either a Chemineer HE3 (CHE3) or a Prochem Maxflo T (PMT), has been studied using a laser Doppler anemometer. Using ensemble averaging, the mean axial and radial flow and the associated fluctuating components were obtained for the whole of the vessel; plus similar data for the tangential component close to the impeller. Assuming axial symmetry, now rates were calculated as were flow numbers and circulation now numbers. Power numbers were also determined. All the data obtained were used to compare the circulation efficiency of the two hydrofoils plus a pitched blade and a Rushton turbine. Thiscomparison showed that the CHE3 required a power input of about 2/3 of that for the PMT and about 1/3 of that for the pitched blade and Rushton turbine to obtain the same axial-radial circulation in the tank.

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Documento generato il 18/09/20 alle ore 15:44:42