An experimental study of two identical air bubbles rising side-by-side in water

被引:22
作者
Agrawal, Meenu [1 ]
Gaurav, Ashish [1 ]
Karri, Badarinath [1 ]
Sahu, Kirti Chandra [2 ]
机构
[1] Indian Inst Technol Hyderabad, Dept Mech & Aerosp Engn, Sangareddy 502285, Telangana, India
[2] Indian Inst Technol Hyderabad, Dept Chem Engn, Sangareddy 502285, Telangana, India
关键词
High speed cameras;
D O I
10.1063/5.0044485
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
We experimentally study the dynamics of two identical air bubbles rising side-by-side in water by varying two parameters, namely, the radius of the bubble and center to center distance between them. The bubbles follow a three-dimensional spiraling motion, and their path and shape oscillations are observed in both the front and top views by using a high speed camera with a back-lit illumination and a mirror arrangement. Bubbles of different sizes are created by using a dumping cup mechanism, and the center to center distance between the two bubbles is varied by using telescopic joints. The dynamics of the two side-by-side bubbles is compared and contrasted with that of a single rising bubble. We found that the bubbles act independent of each other, like a single bubble, when the center to center distance is greater than seven times the radius of the bubbles. For similar separation distances, increasing the size of the bubbles results in a smaller terminal velocity and also lesser deviation from a spiral path due to high inertia.
引用
收藏
页数:9
相关论文
共 29 条
[1]   Effect of bubble interactions on mass transfer in bubbly flow [J].
Aboulhasanzadeh, B. ;
Tryggvason, G. .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2014, 79 :390-396
[2]   Experimental investigation of a nonspherical water droplet falling in air [J].
Agrawal, Meenu ;
Katiyar, Rajat Kumar ;
Karri, Badarinath ;
Sahu, Kirti Chandra .
PHYSICS OF FLUIDS, 2020, 32 (11)
[3]   Effect of viscosity and density ratios on two drops rising side by side [J].
Balla, Mounika ;
Kavuri, Sivanandan ;
Tripathi, Manoj Kumar ;
Sahu, Kirti Chandra ;
Govindarajan, Rama .
PHYSICAL REVIEW FLUIDS, 2020, 5 (01)
[4]   BUBBLES IN VISCOUS-LIQUIDS - SHAPES, WAKES AND VELOCITIES [J].
BHAGA, D ;
WEBER, ME .
JOURNAL OF FLUID MECHANICS, 1981, 105 (APR) :61-85
[5]   On the dispersion of solid particles in a liquid agitated by a bubble swarm [J].
Bonometti, Thomas ;
Magnaudet, Jacques ;
Gardin, Pascal .
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2007, 38 (05) :739-750
[6]  
Boulton-Stone J.M., 1996, INT J MULTIPHAS FLOW, V22, P122, DOI [10.1016/S0301-9322(97)88373-5, DOI 10.1016/S0301-9322(97)88373-5]
[7]   Direct numerical simulations of three-dimensional bubbly flows [J].
Bunner, B ;
Tryggvason, G .
PHYSICS OF FLUIDS, 1999, 11 (08) :1967-1969
[8]   A study of two unequal-sized droplets undergoing oblique collision [J].
Chaitanya, Gembali Sai ;
Sahu, Kirti Chandra ;
Biswas, Gautam .
PHYSICS OF FLUIDS, 2021, 33 (02)
[9]   Numerical investigation on coalescence of bubble pairs rising in a stagnant liquid [J].
Chen, R. H. ;
Tian, W. X. ;
Su, G. H. ;
Qiu, S. Z. ;
Ishiwatari, Yuki ;
Oka, Yoshiaki .
CHEMICAL ENGINEERING SCIENCE, 2011, 66 (21) :5055-5063
[10]  
Deckwer W.D., 1992, Bubble column reactors