scholarly journals Three-dimensional numerical simulation of upflow bubbling fluidized bed in opaque tube under high flux solar heating

AIChE Journal ◽  
2018 ◽  
Vol 64 (11) ◽  
pp. 3857-3867 ◽  
Author(s):  
Hadrien Benoit ◽  
Renaud Ansart ◽  
Hervé Neau ◽  
Pablo Garcia Triñanes ◽  
Gilles Flamant ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Fluidized Bed ◽  
Three Dimensional ◽  
Solar Heating ◽  
High Flux ◽  
Bubbling Fluidized Bed

Three dimensional multi fluid modeling of Geldart B bubbling fluidized bed with complex inlet geometries

2017 ◽  
Vol 312 ◽  
pp. 89-102 ◽  
Author(s):  
Peter Ostermeier ◽  
Annelies Vandersickel ◽  
Stephan Gleis ◽  
Hartmut Spliethoff
Keyword(s):  
Fluidized Bed ◽  
Three Dimensional ◽  
Fluid Modeling ◽  
Bubbling Fluidized Bed

3D Numerical Simulation of Polydisperse Pressurized Gas-Solid Fluidized Bed

2011 ◽  
Author(s):  
P. Fede ◽  
O. Simonin ◽  
I. Ghouila
Keyword(s):  
Numerical Simulation ◽  
Fluidized Bed ◽  
Ethylene Polymerization ◽  
Solid Phase ◽  
Three Dimensional ◽  
Gas Velocity ◽  
Particle Segregation ◽  
3D Numerical Simulation ◽  
Model Predictions ◽  
The Mean

Three dimensional unsteady numerical simulations of dense pressurized polydisperse fluidized bed have been carried out. The geometry is a medium-scale industrial pilot for ethylene polymerization. The numerical simulation have been performed with a polydisperse collision model. The consistency of the polydisperse model predictions with the monodisperse ones is shown. The results show that the pressure distribution and the mean vertical gas velocity are not modified by polydispersion of the solid phase. In contrast, the solid particle species are not identically distributed in the fluidized bed indicating the presence of particle segregation.

Numerical simulation of horizontal jet penetration in a three-dimensional fluidized bed

2008 ◽  
Vol 184 (1) ◽  
pp. 89-99 ◽  
Author(s):  
Tingwen Li ◽  
Konstantin Pougatch ◽  
Martha Salcudean ◽  
Dana Grecov
Keyword(s):  
Numerical Simulation ◽  
Fluidized Bed ◽  
Three Dimensional ◽  
Jet Penetration

Numerical simulation of flow behavior of top-gas jet in a gas-particles bubbling fluidized bed

2018 ◽  
Vol 338 ◽  
pp. 664-676 ◽  
Author(s):  
Wang Lin ◽  
Qi Guoli ◽  
Li Zhenjie ◽  
Liu Songsong ◽  
Muhammad Hassan ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Fluidized Bed ◽  
Flow Behavior ◽  
Gas Jet ◽  
Bubbling Fluidized Bed

Particle-scale modeling of biomass gasification in the three-dimensional bubbling fluidized bed

2019 ◽  
Vol 196 ◽  
pp. 1-17 ◽  
Author(s):  
Shiliang Yang ◽  
Hua Wang ◽  
Yonggang Wei ◽  
Jianhang Hu ◽  
Jia Wei Chew
Keyword(s):  
Fluidized Bed ◽  
Three Dimensional ◽  
Biomass Gasification ◽  
Scale Modeling ◽  
Bubbling Fluidized Bed

scholarly journals Numerical simulation of non-conventional liquid fuels feeding in a bubbling fluidized bed combustor

2013 ◽  
Vol 17 (4) ◽  
pp. 1163-1179
Author(s):  
Milica Mladenovic ◽  
Stevan Nemoda ◽  
Mirko Komatina ◽  
Dragoljub Dakic
Keyword(s):  
Numerical Simulation ◽  
Fluidized Bed ◽  
Liquid Waste ◽  
Liquid Fuels ◽  
Three Phase ◽  
Bubbling Fluidized Bed ◽  
Detailed Simulation ◽  
Calculation Results ◽  
Gas Fuel ◽  
Jet Penetration

The paper deals with the development of mathematical models for detailed simulation of lateral jet penetration into the fluidized bed (FB), primarily from the aspect of feeding of gaseous and liquid fuels into FB furnaces. For that purpose a series of comparisons has been performed between the results of in-house developed procedure- fluid-porous medium numerical simulation of gaseous jet penetration into the fluidized bed, Fluent?s two-fluid Euler-Euler FB simulation model, and experimental results (from the literature) of gaseous jet penetration into the 2D FB. The calculation results, using both models, and experimental data are in good agreement. The developed simulation procedures of jet penetration into the FB are applied to the analysis of the effects, which are registered during the experiments on a fluidized pilot furnace with feeding of liquid waste fuels into the bed, and brief description of the experiments is also presented in the paper. Registered effect suggests that the water in the fuel improved mixing of fuel and oxidizer in the FB furnace, by increasing jet penetration into the FB due to sudden evaporation of water at the entry into the furnace. In order to clarify this effect, numerical simulations of jet penetration into the FB with three-phase systems: gas (fuel, oxidizer, and water vapour), bed particles and water, have been carried out.

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