An improved bubble breakup model in turbulent flow

2020 ◽  
Vol 386 ◽  
pp. 121484 ◽  
Author(s):  
Huahai Zhang ◽  
Guangyao Yang ◽  
Ali Sayyar ◽  
Tiefeng Wang
Keyword(s):  
Turbulent Flow ◽  
Bubble Breakup ◽  
Breakup Model

scholarly journals Breakup model of oscillating drops in turbulent flow field

2021 ◽  
pp. 117036
Author(s):  
Han Zhou ◽  
Xiong Yu ◽  
Bo Wang ◽  
Shan Jing ◽  
Wenjie Lan ◽  
...  
Keyword(s):  
Flow Field ◽  
Turbulent Flow ◽  
Turbulent Flow Field ◽  
Breakup Model

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.

An Introduction to Turbulent Flow

2000 ◽  
Author(s):  
Jean Mathieu ◽  
Julian Scott
Keyword(s):  
Turbulent Flow

Modal Analysis of Turbulent Flow near an Inclined Bank–Longitudinal Structure Junction

2021 ◽  
Vol 147 (3) ◽  
pp. 04020100
Author(s):  
Nasser Heydari ◽  
Panayiotis Diplas ◽  
J. Nathan Kutz ◽  
Soheil Sadeghi Eshkevari
Keyword(s):  
Turbulent Flow ◽  
Modal Analysis ◽  
Longitudinal Structure
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