TY - JOUR
T1 - DIRECT NUMERICAL SIMULATIONS OF TWO-PHASE FLUIDS INTERFACE IN 2D ROTATING DRUMS USING A COUPLED VOF–IBM NUMERICAL APPROACH
AU - Angeles, Luis
AU - Peralta, Sergio
AU - Celis, Cesar
AU - Legendre, Dominique
N1 - Publisher Copyright:
© 2024 by Begell House, Inc.
PY - 2024
Y1 - 2024
N2 - Rotating drums play important roles in numerous industrial applications, such as mineral processing. This work is focused on the numerical study of the interface evolution in liquid–liquid and liquid–gas phase rotating drums. A new coupling strategy between volume of fluid (VOF) and immersed boundary method (IBM) approaches is developed. Relevant dimensionless numbers, including Reynolds, Froude, and Bond numbers, alongside viscosity and density ratios, are considered for the flow pattern characterization. Direct numerical simulations are performed in order to explore flow regimes within the rotating drum, addressing a gap in the literature concerning less-explored flow patterns, particularly in the rotating drum containing liquid–liquid phases. The flow pattern families characterizing rotating drums carrying liquid–liquid phases found in this study are (i) gravity stratified, (ii) mixing, (iii) annular, and (iv) rotation stratified flows. Additionally, the characteristic flow pattern families, gravity stratified, (ii) pool, (iii) annular with pool, and (iv) annular flows, are identified in rotating drums carrying liquid–gas phases. The difference in the transitory responses between the rotating drum featuring liquid–liquid and liquid–gas phases is also shown and discussed. The main results highlight significant contributions for understanding the dynamics of rotating drums, particularly concerning the transitional interface development. By identifying new flow patterns and exploring transitional phenomena, this study enriches the understanding of complex fluid behavior within rotating drum configurations.
AB - Rotating drums play important roles in numerous industrial applications, such as mineral processing. This work is focused on the numerical study of the interface evolution in liquid–liquid and liquid–gas phase rotating drums. A new coupling strategy between volume of fluid (VOF) and immersed boundary method (IBM) approaches is developed. Relevant dimensionless numbers, including Reynolds, Froude, and Bond numbers, alongside viscosity and density ratios, are considered for the flow pattern characterization. Direct numerical simulations are performed in order to explore flow regimes within the rotating drum, addressing a gap in the literature concerning less-explored flow patterns, particularly in the rotating drum containing liquid–liquid phases. The flow pattern families characterizing rotating drums carrying liquid–liquid phases found in this study are (i) gravity stratified, (ii) mixing, (iii) annular, and (iv) rotation stratified flows. Additionally, the characteristic flow pattern families, gravity stratified, (ii) pool, (iii) annular with pool, and (iv) annular flows, are identified in rotating drums carrying liquid–gas phases. The difference in the transitory responses between the rotating drum featuring liquid–liquid and liquid–gas phases is also shown and discussed. The main results highlight significant contributions for understanding the dynamics of rotating drums, particularly concerning the transitional interface development. By identifying new flow patterns and exploring transitional phenomena, this study enriches the understanding of complex fluid behavior within rotating drum configurations.
KW - IBM coupling
KW - VOF
KW - immersed boundary method
KW - immiscible fluids
KW - interface
KW - rotating drums
KW - two-phase flow
KW - volume of fluid
UR - http://www.scopus.com/inward/record.url?scp=85210247136&partnerID=8YFLogxK
U2 - 10.1615/MultScienTechn.2024052858
DO - 10.1615/MultScienTechn.2024052858
M3 - Article
AN - SCOPUS:85210247136
SN - 0276-1459
VL - 36
SP - 1
EP - 24
JO - Multiphase Science and Technology
JF - Multiphase Science and Technology
IS - 4
ER -