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

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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.

论文关键词:Trailing vortices,Rushton impeller,PIV measurements,DES,Numerical simulation

论文评审过程:Received 5 March 2015, Revised 8 May 2015, Accepted 12 June 2015, Available online 3 July 2015, Version of Record 15 November 2015.

论文官网地址:https://doi.org/10.1016/j.amc.2015.06.044