In this article, computational investigation of the gas-liquid ow in stirred tank with multiple Rushton impellers was carried out. Experimental results of average and local details of gas-liquid ow characters were reported, including gas-holdup, bubble Sauter diameter, speci c area and mass transfer coe cient. Thoroughly interphase momentum transfer models including drag and non-drag models were investigated, together with four mass transfer coe cient models using commercial CFD software ANSYS CFX 12.0. Among the drag models tested, the modi ed Brucato model showed more accurate results than others, while non-drag models showed slight e ects on the average ow and local ow characters. For accurate local ow simulation, the population balance model (PBM) showed quite sensitive e ect on the local gas distribution. Simulation of interphase mass transfer with eddy cell model showed the most agreement with experimental measured data. Additionally, two advection schemes were employed and compared with each other to test their ability to get more accurate simulation result.
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