scholarly journals CFD-modeling of effects of draft tubes on operating condition in spouted beds

2013 ◽  
Vol 37 (4) ◽  
pp. 1851-1859 ◽  
Author(s):  
S. Moradi ◽  
A. Yeganeh ◽  
M. Salimi
Keyword(s):  
Cfd Modeling ◽  
Operating Condition ◽  
Spouted Beds ◽  
Draft Tubes

Simulation of Spouted Bed Using a Eulerian Multiphase Model

2005 ◽  
Vol 498-499 ◽  
pp. 270-277 ◽  
Author(s):  
Claudio Roberto Duarte ◽  
Valéria V. Murata ◽  
Marcos A.S. Barrozo
Keyword(s):  
Control Volume ◽  
Flow Behavior ◽  
Cfd Modeling ◽  
Gas Flows ◽  
Present Calculation ◽  
Multiphase Model ◽  
Spouted Bed ◽  
Particle Coating ◽  
Spouted Beds ◽  
Good Agreement

Spouted bed systems have emerged as very efficient fluid-particle contactors and find many applications in the chemical and biochemical industry. Some important applications of spouted beds include coal combustion, biochemical reactions, drying of solids, drying of solutions and suspensions, granulation, blending, grinding, and particle coating. An extensive overview can be found in Mathur and Epstein[1]. The pattern of solid and gas flows in a spouted bed was numerically simulated using a CFD modeling technique. The Eulerian-Eulerian multifluid modeling approach was applied to predict gas-solid flow behavior. A commercially available, control-volume-based code FLUENT 6.1 was chosen to carry out the computer simulations. In order to reduce computational times and required system resources, the 2D axisymmetric segregated solver was chosen. The typical flow pattern of the spouted bed was obtained in the present calculation. The simulated velocity and voidage profiles presented a good agreement qualitative and quantitative with the experimental results obtained by He et al. [4].

Operating and Peak Pressure Drops in Conical Spouted Beds Equipped with Draft Tubes of Different Configuration

2013 ◽  
Vol 53 (1) ◽  
pp. 415-427 ◽  
Author(s):  
Haritz Altzibar ◽  
Gartzen Lopez ◽  
Javier Bilbao ◽  
Martin Olazar
Keyword(s):  
Peak Pressure ◽  
Pressure Drops ◽  
Spouted Beds ◽  
Draft Tubes

Minimum Spouting Velocity of Conical Spouted Beds Equipped with Draft Tubes of Different Configuration

2013 ◽  
Vol 52 (8) ◽  
pp. 2995-3006 ◽  
Author(s):  
Haritz Altzibar ◽  
Gartzen Lopez ◽  
Javier Bilbao ◽  
Martin Olazar
Keyword(s):  
Spouted Beds ◽  
Draft Tubes

scholarly journals Bed symmetry in the fountain confined conical spouted beds with open-sided draft tubes

2021 ◽  
Author(s):  
Mikel Tellabide ◽  
Idoia Estiati ◽  
Aitor Atxutegi ◽  
Haritz Altzibar ◽  
Javier Bilbao ◽  
...  
Keyword(s):  
Spouted Beds ◽  
Draft Tubes

Smart computing approach for design and scale-up of conical spouted beds with open-sided draft tubes

Particuology ◽  
2020 ◽  
Author(s):  
M. Karimi ◽  
B. Vaferi ◽  
S.H. Hosseini ◽  
M. Olazar ◽  
S. Rashidi
Keyword(s):  
Scale Up ◽  
Spouted Beds ◽  
Draft Tubes ◽  
Smart Computing ◽  
Computing Approach

CFD modeling of conical spouted beds for processing LDPE/Al composite

2016 ◽  
Vol 108 ◽  
pp. 93-108 ◽  
Author(s):  
J.L.Z. Melo ◽  
M.S. Bacelos ◽  
F.A.R. Pereira ◽  
T.S. Lira ◽  
D. Gidaspow
Keyword(s):  
Cfd Modeling ◽  
Spouted Beds ◽  
Al Composite

Effects of Draft Tubes on Particle Velocity Profiles in Spouted Beds

2006 ◽  
Vol 29 (7) ◽  
pp. 875-881 ◽  
Author(s):  
X.-L. Zhao ◽  
Q. Yao ◽  
S.-Q. Li
Keyword(s):  
Particle Velocity ◽  
Velocity Profiles ◽  
Spouted Beds ◽  
Draft Tubes

Particle Cycle Times and Solid Circulation Rates in Conical Spouted Beds with Draft Tubes of Different Configuration

2013 ◽  
Vol 52 (45) ◽  
pp. 15959-15967 ◽  
Author(s):  
H. Altzibar ◽  
G. Lopez ◽  
I. Estiati ◽  
J. Bilbao ◽  
M. Olazar
Keyword(s):  
Cycle Times ◽  
Spouted Beds ◽  
Draft Tubes

CFD modeling of the gas–particle flow behavior in spouted beds

2008 ◽  
Vol 183 (2) ◽  
pp. 260-272 ◽  
Author(s):  
Wu Zhonghua ◽  
Arun S. Mujumdar
Keyword(s):  
Flow Behavior ◽  
Particle Flow ◽  
Cfd Modeling ◽  
Spouted Beds

CFD Multifluid Simulation of Spouted Beds with and without Internal Draft Tubes

2011 ◽  
Vol 6 (1) ◽  
Author(s):  
Mahmood Reza Rahimi ◽  
Salar Azizi
Keyword(s):  
Experimental Data ◽  
Particle Trajectory ◽  
Draft Tube ◽  
Granular Flows ◽  
Spouted Bed ◽  
Drag Model ◽  
Spouted Beds ◽  
Particulate Solids ◽  
Computational Fluid Dynamics Cfd ◽  
Draft Tubes

The insertion of an axially positioned non-porous and porous draft tube into the conventional spouted bed has shown potential advantages in stability and flexibility of the system and controlling particle trajectory history. In this work with computational fluid dynamics (CFD), important information on the flow field within three types of spouted bed has been provided and influences of using internal tube on spouted beds hydrodynamics were investigated. The simulation used the multi-fluid Eulerian-Eulerian approach based on kinetic theory of granular flows (KTGF), incorporating a kinetic-frictional constitutive model for dense assemblies of particulate solids and Gidaspow’s drag model for the interaction between gas and particles. Finally, the modeling results were compared with the experimental data from literature.

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