Frictional drag reduction by bubble injection
Y Murai - Experiments in fluids, 2014 - Springer
The injection of gas bubbles into a turbulent boundary layer of a liquid phase has multiple
different impacts on the original flow structure. Frictional drag reduction is a phenomenon …
different impacts on the original flow structure. Frictional drag reduction is a phenomenon …
CFD modeling of bubble-induced turbulence
R Rzehak, E Krepper - International Journal of Multiphase Flow, 2013 - Elsevier
Modeling of bubble-induced turbulence in dispersed gas–liquid multiphase flow is an
important but still unresolved issue. Aside from its intrinsic interest, turbulence in this type of …
important but still unresolved issue. Aside from its intrinsic interest, turbulence in this type of …
Multiphase turbulence in bubbly flows: RANS simulations
M Colombo, M Fairweather - International Journal of Multiphase Flow, 2015 - Elsevier
The ability of a two-fluid Eulerian–Eulerian computational multiphase fluid dynamic model to
predict bubbly air–water flows is studied. Upward and downward pipe flows are considered …
predict bubbly air–water flows is studied. Upward and downward pipe flows are considered …
Euler–Euler multiphase CFD-simulation with full Reynolds stress model and anisotropic bubble-induced turbulence
J Parekh, R Rzehak - International Journal of Multiphase Flow, 2018 - Elsevier
In the present work, Euler–Euler modeling of bubbly flows is combined with a full Reynolds
stress model for the turbulence in the liquid carrier phase. Reynolds stress models have only …
stress model for the turbulence in the liquid carrier phase. Reynolds stress models have only …
Modulation of turbulence intensity by heavy finite-size particles in upward channel flow
It has been recognized that, generally, large particles enhance the turbulence intensity,
while small particles attenuate the turbulence intensity. However, there has been no …
while small particles attenuate the turbulence intensity. However, there has been no …
Application of a novel model for bubble-induced turbulence to bubbly flows in containers and vertical pipes
The baseline model for the CFD-simulation of turbulent bubbly flows in the Euler-Euler
framework was proposed several years ago. It defines a fixed set of closures including all …
framework was proposed several years ago. It defines a fixed set of closures including all …
A generalized multiphase modelling approach for multiscale flows
Multiphase flows are ubiquitous both in nature and industry. A broad range of interfacial
scales, ranging from fine dispersions to large segregated interfaces, is often observed in …
scales, ranging from fine dispersions to large segregated interfaces, is often observed in …
Coupling of CFD with DPBM for an RDC extractor
C Drumm, MM Attarakih, HJ Bart - Chemical engineering science, 2009 - Elsevier
For the design of counter-current liquid–liquid extraction columns, there is a strong industrial
demand for more straightforward, faster and money-saving simulation methods. One …
demand for more straightforward, faster and money-saving simulation methods. One …
Lift force acting on single bubbles in linear shear flows
S Aoyama, K Hayashi, S Hosokawa, D Lucas… - International Journal of …, 2017 - Elsevier
Lift coefficients, CL, of single bubbles in linear shear flows are measured to investigate
effects of the bubble shape, the liquid velocity gradient and the fluid property on C L. The …
effects of the bubble shape, the liquid velocity gradient and the fluid property on C L. The …
A comprehensive sub-grid air entrainment model for RaNS modeling of free-surface bubbly flows
The simulation of free surface bubbly flows using a two-fluid model remains a challenging
problem in part due to the lack of a comprehensive air entrainment model that can predict …
problem in part due to the lack of a comprehensive air entrainment model that can predict …