Puzzling Bubble Rise Speed Increase in Dense Granular Suspensions

被引:8
作者
Madec, Christopher [1 ]
Collin, Brivael [1 ]
Jerome, J. John Soundar [2 ]
Joubaud, Sylvain [1 ,3 ]
机构
[1] Univ Lyon, ENS Lyon, Univ Claude Bernard, CNRS,Lab Phys, F-69367 Lyon 07, France
[2] Univ Lyon, Univ Claude Bernard Lyon 1, Lab Mecan Fluides & Acoust, CNRS,UMR 5509, Blvd 11 Novembre, F-69622 Lyon, France
[3] Inst Univ France IUF, 1 Rue Descartes, F-75005 Paris, France
关键词
CONCENTRATED SUSPENSIONS; AIR BUBBLES; MOTION; PARTICLES; DYNAMICS; PRESSURE; FLOWS;
D O I
10.1103/PhysRevLett.125.078004
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present an anomalous experimental observation on the rising speed of air bubbles in a Hele-Shaw cell containing a suspension of spherical, neutrally buoyant, non-Brownian particles. Strikingly, bubbles rise faster in suspensions as compared to particle-less liquids of the same effective viscosity. By carefully measuring this bubble speed increase at various particle volume fraction and via velocity field imaging, we demonstrate that this strange bubble dynamics is linked to a reduction in the bulk dissipation rate. A good match between our experimental data and computations based on a Suspension Balance Model (SBM) illustrates that the underlying mechanism for this dissipation-rate deficit is related to a nonuniform particle distribution in the direction perpendicular to the channel walls due to shear-induced particle migration.
引用
收藏
页数:6
相关论文
共 50 条
[1]   Unifying Suspension and Granular Rheology [J].
Boyer, Francois ;
Guazzelli, Elisabeth ;
Pouliquen, Olivier .
PHYSICAL REVIEW LETTERS, 2011, 107 (18)
[2]   THE MOTION OF LONG BUBBLES IN TUBES [J].
BRETHERTON, FP .
JOURNAL OF FLUID MECHANICS, 1961, 10 (02) :166-188
[3]  
Clift R., 2005, Bubbles, Drops, and Particles
[4]   Rheology of dense suspensions of non-colloidal spheres in yield-stress fluids [J].
Dagois-Bohy, Simon ;
Hormozi, Sarah ;
Guazzelli, Elisabeth ;
Pouliquen, Olivier .
JOURNAL OF FLUID MECHANICS, 2015, 776 :R2
[5]   Intriguing viscosity effects in confined suspensions: A numerical study [J].
Davit, Y. ;
Peyla, P. .
EPL, 2008, 83 (06)
[6]   Bubble Dynamics in Soft and Biological Matter [J].
Dollet, Benjamin ;
Marmottant, Philippe ;
Garbin, Valeria .
ANNUAL REVIEW OF FLUID MECHANICS, VOL 51, 2019, 51 :331-355
[7]   Effective viscosity of two-dimensional suspensions: Confinement effects [J].
Doyeux, Vincent ;
Priem, Stephane ;
Jibuti, Levan ;
Farutin, Alexander ;
Ismail, Mourad ;
Peyla, Philippe .
PHYSICAL REVIEW FLUIDS, 2016, 1 (04)
[8]   On the rise of an ellipsoidal bubble in water: oscillatory paths and liquid-induced velocity [J].
Ellingsen, K ;
Risso, F .
JOURNAL OF FLUID MECHANICS, 2001, 440 :235-268
[9]  
FABRE J, 1992, ANNU REV FLUID MECH, V24, P21, DOI 10.1146/annurev.fl.24.010192.000321
[10]   Nonlinear bubble dynamics [J].
Feng, ZC ;
Leal, LG .
ANNUAL REVIEW OF FLUID MECHANICS, 1997, 29 :201-243