Coalescence and Break-Up in Bubble Columns: Euler-Lagrange Simulations Using a Stochastic Approach

2013 ◽  
Vol 85 (7) ◽  
pp. 1118-1130 ◽  
Author(s):  
Michael C. Gruber ◽  
Stefan Radl ◽  
Johannes G. Khinast
Keyword(s):  
Stochastic Approach ◽  
Bubble Columns ◽  
Break Up

Pressure and gas density effects on bubble break-up and gas hold-up in bubble columns

1990 ◽  
Vol 45 (8) ◽  
pp. 2309-2315 ◽  
Author(s):  
Peter M. Wilkinson ◽  
Laurent L. v. Dierendonck
Keyword(s):  
Bubble Columns ◽  
Gas Density ◽  
Density Effects ◽  
Break Up

Flow Simulation in Bubble Columns in Regard to Bubble Coalescence and Break-up Utilizing LES and DEM

2004 ◽  
Vol 37 (8) ◽  
pp. 976-989 ◽  
Author(s):  
Hiroshi Takeda ◽  
Norio Esaki ◽  
Kenji Doi ◽  
Hirofumi Murakami ◽  
Koichi Yamasaki ◽  
...  
Keyword(s):  
Flow Simulation ◽  
Bubble Columns ◽  
Bubble Coalescence ◽  
Break Up

Bubble coalescence and break-up in air-sparged bubble columns

AIChE Journal ◽  
1990 ◽  
Vol 36 (10) ◽  
pp. 1485-1499 ◽  
Author(s):  
Michael J. Prince ◽  
Harvey W. Blanch
Keyword(s):  
Bubble Columns ◽  
Bubble Coalescence ◽  
Break Up

Numerical Calculation of the Flow Field in Bubble Columns Using a Simplified Form of the Population Balance Equation

2002 ◽  
Author(s):  
D. Wiemann ◽  
F. Lehr ◽  
D. Mewes
Keyword(s):  
Transport Equation ◽  
Balance Equation ◽  
Three Dimensional ◽  
Population Balance ◽  
Interfacial Area ◽  
Partial Solution ◽  
Bubble Columns ◽  
Population Balance Equation ◽  
Numerical Effort ◽  
Break Up

The three dimensional velocity field is numerically calculated for bubble columns using an Euler-Euler approach with an additional transport equation for the interfacial area. The spacial bubble number density is obtained by solving the population balance equation numerically. In order to reduce the numerical effort or to avoid restrictive assumptions for bubble break-up and coalescene processes a partial solution of the population balance is derived. It is valid asymptotically as the bubble swarm moves away from the distributor. The approximate solution leads to a transport equation for the mean bubble volume, which is solved in dependence of the bubble break-up and coalescence processes. Both phenomena are considered. For the numerical calculations the interfacial area transport equation is coupled with the balance equations for mass and momentum transport. The calculations are performed for instationary, three-dimensional flows in cylindrical bubble columns with diameters up to 0.29 m and 4.425 m of height.

The calamity of family break-up

Nature ◽  
1998 ◽  
Author(s):  
Henry Gee
Keyword(s):  
Break Up
Sign in / Sign up

Export Citation Format

Share Document