This study reports a comparison between Computational Fluid Dynamics (CFD) simulation and experimental results on a reduced scale stirred tank with a three-blade hydrofoil impeller. The purpose is to validate CFD simulation as a procedure to understand the behavior of stirred tanks for mixing processes. Torque on the impeller was measured and experimental Power curve is plotted to be compared to corresponding CFD results. The Volume of Fluid (VoF) method is applied and SST k-w model is used to simulate the fluid flow turbulence within the stirred tank. A Newtonian fluid has been considered, a fluid density of 1,623 kg/m3, dynamic viscosity of 0,065 Pa·s and angular velocities between 200 and 700 min-1. Power curves obtained show an asymptotic behavior in turbulent flow for both numerical simulation and experimental procedure. Comparison between numerical and experimental results exhibits a mean difference of 9 %. This validation demonstrates potential for general applicability on the study of industrial scale stirred tanks by means of numerical simulation.
Autor(es):Chambergo, José C.
Pachas, Alex A.
Valverde, Quino
Franco, Rosendo
Yépez, Herbert
Gazzolo, Renato P.
Shimabukuro, Roberto T.
Año: 2016
Ciudad: Victoria
Url: http://investigacion.pucp.edu.pe/grupos/inacom/wp-content/uploads/sites/144/2018/05/ENCIT2016-JCChambergo.pdf