CFD SIMULATION OF FLOW PATTERNS IN DUAL IMPELLER STIRRED TANK

2013 ◽  
Vol 33 (2) ◽  
Author(s):  
Thiyam T. Devi ◽  
Bimlesh Kumar
Keyword(s):  
Cfd Simulation ◽  
Flow Patterns ◽  
Stirred Tank

scholarly journals CFD simulation of flow patterns in unbaffled stirred tank with CD-6 impeller

2012 ◽  
Vol 18 (4-1) ◽  
pp. 535-546 ◽  
Author(s):  
Tamphasana Devi ◽  
Bimlesh Kumar
Keyword(s):  
Numerical Simulations ◽  
Cfd Simulation ◽  
Flow Patterns ◽  
Industrial Applications ◽  
Spatial Variations ◽  
Stirred Tank ◽  
Rushton Turbine ◽  
Stirred Vessels

Understanding the flow in stirred vessels can be useful for a wide number of industrial applications. There is a wealth of numerical simulations of stirring vessels with standard impeller such as Rushton turbine and pitch blade turbine. Here, a CFD study has been performed to observe the spatial variations (angular, axial and radial) of hydrodynamics (velocity and turbulence field) in unbaffled stirred tank with Concave-bladed Disc turbine (CD-6) impeller. Three speeds (N=296, 638 & 844.6 rpm) have been considered for this study. The angular variations of hydrodynamics of stirred tank were found very less as compared to axial and radial variations.

CFD simulation of particle suspension in a stirred tank

Particuology ◽  
2013 ◽  
Vol 11 (3) ◽  
pp. 317-326 ◽  
Author(s):  
Nana Qi ◽  
Hu Zhang ◽  
Kai Zhang ◽  
Gang Xu ◽  
Yongping Yang
Keyword(s):  
Cfd Simulation ◽  
Stirred Tank ◽  
Particle Suspension

scholarly journals Impact of thixotropy on flow patterns induced in a stirred tank: Numerical and experimental studies

2008 ◽  
Vol 86 (6) ◽  
pp. 545-553 ◽  
Author(s):  
G. Couerbe ◽  
D.F. Fletcher ◽  
C. Xuereb ◽  
M. Poux
Keyword(s):  
Experimental Studies ◽  
Flow Patterns ◽  
Stirred Tank

Experimental Visualization and Numerical Simulation of Liquid-Gas Two-Phase Flows in a Horizontal Pipe

2017 ◽  
Author(s):  
Milad Darzi ◽  
Chanwoo Park
Keyword(s):  
Numerical Simulation ◽  
Gas Flow ◽  
Cfd Simulation ◽  
Glass Tube ◽  
Flow Patterns ◽  
Two Phase Flows ◽  
Two Phase ◽  
Mixture Flow ◽  
Horizontal Pipe ◽  
Flow Rates

This paper presents the results of both visualization experiment and numerical simulation for two-phase (water-air mixture) flows in a horizontal tube. A visualization experimental setup was used to observe various two-phase flow patterns for different flow rates of water/air mixture flow in a glass tube of 12 mm in diameter. Total of 303 experimental data points were compared with Mandhane’s flow map. Most of the data for stratified, plug and slug flows were found to be in good agreement. However, annular flow was observed for relatively lower gas flow rates and also wavy flow occurred at relatively higher liquid flow rates in this experiment. A three-dimensional Computational Fluid Dynamics (CFD) simulation was performed using OpenFOAM employing “interFoam” as the solver to simulate the two-phase flows in horizontal pipe based on Volume-Of-Fluid (VOF) method. The simulated and experimentally observed flow patterns for the same set of superficial velocities shows acceptable similarities for stratified, wavy, plug, slug and annular flows. Also, the computed values of the void fraction and pressure drop for the numerical simulations shows reasonable agreement with well-known correlations in literature.

CFD simulation of free liquid surface motion in a pilot plant stirred tank

2011 ◽  
Vol 89 (4) ◽  
pp. 717-724 ◽  
Author(s):  
M. Jahoda ◽  
M. Moštěk ◽  
I. Fořt ◽  
P. Hasal
Keyword(s):  
Pilot Plant ◽  
Cfd Simulation ◽  
Liquid Surface ◽  
Free Liquid Surface ◽  
Stirred Tank ◽  
Surface Motion

CFD Simulation of Solid Suspension in a Stirred Reactor Driven by a Dual Punched Rigid-Flexible Impeller

2018 ◽  
Vol 16 (5) ◽  
Author(s):  
Deyin Gu ◽  
Zuohua Liu ◽  
Facheng Qiu ◽  
Jun Li ◽  
Changyuan Tao ◽  
...  
Keyword(s):  
Reference Frames ◽  
Cfd Simulation ◽  
Energy Dissipation Rate ◽  
Solid Particles ◽  
Stirred Tank ◽  
Two Phase ◽  
Stirred Reactor ◽  
Solid Suspension ◽  
Computational Fluid Dynamics Cfd ◽  
Solid Liquid

Abstract Solid suspension characteristics were predicted by computational fluid dynamics (CFD) simulation in a stirred tank driven by a dual rigid-flexible impeller and a dual punched rigid-flexible impeller. An Eulerian-Eulerian approach, standard k-ε turbulence model, and multiple reference frames (MRF) technique were employed to simulate the solid-liquid two-phase flow, turbulent flow, and impeller rotation in the stirred tank, respectively. The CFD results showed that dual punched rigid-flexible impeller could increase the axial velocity and turbulent kinetic energy dissipation rate, and decrease the quantity of sediment solid particles compared with dual rigid-flexible impeller. Less impeller power was consumed by dual punched rigid-flexible impeller compared with dual rigid-flexible impeller at the same impeller speed. It was found that punched rigid-flexible impeller was more efficient in terms of solid suspension quality than dual rigid-flexible impeller at the same Pw. The simulated results for the axial solid concentration were in good agreement with the experimental data.

CFD simulation of complete drawdown of floating solids in a stirred tank

2014 ◽  
Vol 93 (1) ◽  
pp. 141-149 ◽  
Author(s):  
Shengchao Qiao ◽  
Rijie Wang ◽  
Xiaoxia Yang ◽  
Yuefei Yan
Keyword(s):  
Cfd Simulation ◽  
Stirred Tank
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