CFD Simulation of Average and Local Gas–Liquid Flow Properties in Stirred Tank Reactors with Multiple Rushton Impellers

2017 ◽  
Vol 50 (12) ◽  
pp. 878-891 ◽  
Author(s):  
Ao Pan ◽  
Minghui Xie ◽  
Chao Li ◽  
Jianye Xia ◽  
Ju Chu ◽  
...  
Keyword(s):  
Liquid Flow ◽  
Cfd Simulation ◽  
Stirred Tank ◽  
Flow Properties ◽  
Stirred Tank Reactors ◽  
Gas Liquid Flow

CFD simulation of gas-liquid flow in stirred tanks: Effect of drag models

2020 ◽  
Vol 386 ◽  
pp. 121554 ◽  
Author(s):  
Xiaoping Guan ◽  
Xinju Li ◽  
Ning Yang ◽  
Mingyan Liu
Keyword(s):  
Liquid Flow ◽  
Cfd Simulation ◽  
Stirred Tanks ◽  
Drag Models ◽  
Gas Liquid Flow

Experimentally Validated CFD Model for Gas-Liquid Flow in a Round-Bottom Stirred Tank Equipped with Rushton Turbine

2017 ◽  
Vol 15 (2) ◽  
Author(s):  
Dmitry Vladimirovich Gradov ◽  
Arto Laari ◽  
Ilkka Turunen ◽  
Tuomas Koiranen
Keyword(s):  
Liquid Flow ◽  
Gas Flow ◽  
Turbulence Models ◽  
Power Input ◽  
Stirred Tank ◽  
Cfd Model ◽  
Dissipation Energy ◽  
Measured Velocity ◽  
Rushton Turbine ◽  
Gas Liquid Flow

Abstract Hydrodynamics of gas-liquid flow in a round-bottom stirred tank is modelled at two gas flow rates, constant bubble size and agitator speed of 300 rpm. A round-bottom tank equipped with four baffles and a Rushton turbine was chosen to represent a typical reactor used in hydrometallurgical processes operating under pressure. The applicability of different momentum interchange models and the Realizable k-ε, SST k-ω, and RSM turbulence models was studied using CFD software. The results were compared and validated against experimental data from Particle Image Velocimetry measurements by means of liquid and gas velocity distributions. In addition, energy balance between power input and dissipation energy was compared for the different turbulence models. The CFD model was found to be in good agreement with the measurements. Of the turbulence models studied, the Realizable k-ε model showed best agreement with the measured velocity profiles. Popular drag force models proposed in the literature were assessed, as was the influence of inclusion of non-drag forces. Gas flow was found to affect the liquid phase flow in the tank by generating an additional secondary circulation loop in the upper part of the reactor.

CFD simulation of gas–liquid flow in a high-pressure bubble column with a modified population balance model

2018 ◽  
Vol 26 (6) ◽  
pp. 1350-1358 ◽  
Author(s):  
Bo Zhang ◽  
Lingtong Kong ◽  
Haibo Jin ◽  
Guangxiang He ◽  
Suohe Yang ◽  
...  
Keyword(s):  
High Pressure ◽  
Liquid Flow ◽  
Cfd Simulation ◽  
Bubble Column ◽  
Population Balance ◽  
Balance Model ◽  
Population Balance Model ◽  
Gas Liquid Flow

Multi-scale analysis of gas–liquid interaction and CFD simulation of gas–liquid flow in bubble columns

2011 ◽  
Vol 66 (14) ◽  
pp. 3212-3222 ◽  
Author(s):  
Ning Yang ◽  
Zongying Wu ◽  
Jianhua Chen ◽  
Yuhua Wang ◽  
Jinghai Li
Keyword(s):  
Liquid Flow ◽  
Cfd Simulation ◽  
Bubble Columns ◽  
Scale Analysis ◽  
Multi Scale ◽  
Gas Liquid Flow ◽  
Multi Scale Analysis
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