scholarly journals A CFD‐PBM coupled model under entire turbulent spectrum for simulating a bubble column with highly viscous media

AIChE Journal ◽  
2021 ◽  
Author(s):  
Huahai Zhang ◽  
Yuelin Wang ◽  
Ali Sayyar ◽  
Tiefeng Wang
Keyword(s):  
Bubble Column ◽  
Coupled Model ◽  
Turbulent Spectrum ◽  
Viscous Media

scholarly journals A CFD-PBM coupled model under entire turbulent spectrum for simulating a bubble column with highly viscous media

2021 ◽  
Author(s):  
Huahai Zhang ◽  
Yuelin Wang ◽  
Ali Sayyar ◽  
Tiefeng Wang
Keyword(s):  
Bubble Column ◽  
Coupled Model ◽  
Turbulent Energy ◽  
Balance Model ◽  
Inertial Subrange ◽  
Liquid Viscosity ◽  
Bubble Breakup ◽  
Turbulent Spectrum ◽  
Hydrodynamic Behaviors ◽  
Breakup Model

To account for the effect of liquid viscosity, the bubble breakup model considering turbulent eddy collision based on the inertial subrange turbulent spectrum was extended to the entire turbulent spectrum that included the energy-containing, inertial, and energy-dissipation subranges. The computational fluid dynamics-population balance model (CFD-PBM) coupled model was modified to include this extended bubble breakup model for simulations of a bubble column. The effect of turbulent energy spectrum on the bubble breakup and hydrodynamic behaviors was studied in a bubble column under different liquid viscosities. The results showed that when the liquid viscosity was < 80 mPas, the bubble breakup and hydrodynamics were almost independent on the turbulent spectrum. At liquid viscosity > 80 mPas, the bubble breakup rate and gas holdup were significantly under-predicted when the inertial turbulent spectrum was used, and when using the entire turbulent spectrum the predictions were more consistent with experimental data.

Generality of the CFD-PBM coupled model for bubble column simulation

2020 ◽  
Vol 219 ◽  
pp. 115514 ◽  
Author(s):  
Huahai Zhang ◽  
Ali Sayyar ◽  
Yuelin Wang ◽  
Tiefeng Wang
Keyword(s):  
Bubble Column ◽  
Coupled Model

Drag force of bubble swarms and numerical simulations of a bubble column with a CFD-PBM coupled model

2018 ◽  
Vol 192 ◽  
pp. 714-724 ◽  
Author(s):  
Guangyao Yang ◽  
Huahai Zhang ◽  
Jiajia Luo ◽  
Tiefeng Wang
Keyword(s):  
Numerical Simulations ◽  
Drag Force ◽  
Bubble Column ◽  
Coupled Model
Sign in / Sign up

Export Citation Format

Share Document