0447392 - ÚH 2016 RIV US eng J - Journal Article
Chára, Zdeněk - Kysela, Bohuš - Konfršt, Jiří - Fořt, I.
Study of fluid flow in baffled vessels stirred by a Rushton standard impeller.
Applied Mathematics and Computation. Roč. 272, č. 3 (2016), s. 614-628. ISSN 0096-3003. E-ISSN 1873-5649
R&D Projects: GA ČR GAP101/12/2274
Institutional support: RVO:67985874
Keywords : trailing vortices * rushton impeller * PIV measurements * DES * numerical simulation
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 1.738, year: 2016 ; AIS: 0.517, rok: 2016
DOI: https://doi.org/10.1016/j.amc.2015.06.044

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 (Re_M = 3.3 × 10⁴). The simulation results are compared with the experimental data.
Permanent Link: http://hdl.handle.net/11104/0254462