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ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
VALIDATION OF THE CFD SIMULATION OF A REDUCED SCALE STIRRED TANK WITH A THREE-BLADE HYDROFOIL IMPELLER
Submission Author:
José Chambergo , San Miguel , Peru
Co-Authors:
Alex Pachas, Quino Valverde, Rosendo Franco Rodriguez, Herbert Yépez Castillo, Renato Paolo Gazzolo Ruiz, Roberto Takao Shimabukuro Lopez
Presenter: José Chambergo
doi://10.26678/ABCM.ENCIT2016.CIT2016-0709
Abstract
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 proceesses. 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-ω 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 P a·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.
Keywords
Stirred tank, Mixing process, Power Curve, hydrofoil impeller, Computational fluid dynamics (CFD)
