Study of fluid flow in baffled vessels stirred by a Rushton standard impeller

The paper deals with an investigation of velocity field in a tank stirred by a standard Rushton impeller located in the middle of the tank height. Time-resolved PIV method was used to measure the angle-resolved velocity field near the impeller blades in horizontal and vertical planes as well. Based...

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Bibliographic Details
Published inApplied mathematics and computation Vol. 272; pp. 614 - 628
Main Authors Chara, Zdenek, Kysela, Bohus, Konfrst, Jiri, Fort, Ivan
Format Journal Article
LanguageEnglish
Published Elsevier Inc 01.01.2016
Subjects
DES
Numerical simulation
PIV measurements
Rushton impeller
Trailing vortices
Numerical simulation
DES
PIV measurements
Trailing vortices
Rushton impeller
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Summary:The paper deals with an investigation of velocity field in a tank stirred by a standard Rushton impeller located in the middle of the tank height. Time-resolved PIV method was used to measure the angle-resolved velocity field near the impeller blades in horizontal and vertical planes as well. Based on a simplified criterion λ2 < 0 the location, size and strength of trailing vortices behind the blades were determined. The measurements were carried out in two tanks of diameters T = 0.3 and 0.4 m and at mixing Reynolds numbers in a range 3.3–4.9 × 104. Simultaneously a detached eddy simulation (DES) was performed for the tank diameter T = 0.3 m and rotation speed 200 rpm (ReM = 3.3 × 104). The simulation results are compared with the experimental data.
ISSN:0096-3003
1873-5649
DOI:10.1016/j.amc.2015.06.044