We study experimentally the formation of millimeter-sized oil-coated bubbles at a customized co-axial orifice system and the pinch-off dynamics of the oil column attached below the rising gas bubble. After the gas bubble detaches from the inner orifice, it rises under buoyancy and stretches the oil column to cause pinch-off, forming an oil-coated bubble, with the oil fraction set by the pinch-off location. We show that this pinch-off location is dominated by the size ratio of the gas bubble/oil tail to the outer orifice, and a theoretical model is proposed to predict the oil fraction, describing the experimental results well. Our findings provide potential guidelines for the controllable generation of compound multiphase bubbles using co-axial orifices.
References
1.
R. E.
Johnson
and S. S.
Sadhal
, “Fluid mechanics of compound multiphase drops and bubbles
,” Annu. Rev. Fluid Mech.
17
(1
), 289
–320
(1985
).2.
S. S.
Sadhal
, P. S.
Ayyaswamy
, and J. N.
Chung
, Transport Phenomena with Drops and Bubbles
(Springer Science & Business Media
, 2012
).3.
C.
Johansen
, A. C.
Todd
, and I. R.
MacDonald
, “Time series video analysis of bubble release processes at natural hydrocarbon seeps in the northern Gulf of Mexico
,” Mar. Pet. Geol.
82
, 21
–34
(2017
).4.
T. S.
Emery
, P. A.
Raghupathi
, and S. G.
Kandlikar
, “Bubble growth inside an evaporating liquid droplet introduced in an immiscible superheated liquid
,” Int. J. Heat Mass Transfer
127
, 313
–321
(2018
).5.
A. A.
Kulkarni
and V. V.
Ranade
, “Direct contact heat transfer via injecting volatile liquid in a hot liquid pool: Generation and motion of bubbles
,” Chem. Eng. Sci.
100
, 421
–432
(2013
).6.
G. R.
Moore
, “Vaporization of superheated drops in liquids
,” AIChE J.
5
(4
), 458
–466
(1959
).7.
C. W.
Visser
, D. N.
Amato
, J.
Mueller
, and J. A.
Lewis
, “Architected polymer foams via direct bubble writing
,” Adv. Mater.
31
(46
), 1904668
(2019
).8.
S.
Zhu
, A.
Kherbeche
, Y.
Feng
, and M. J.
Thoraval
, “Impact of an air-in-liquid compound drop onto a liquid surface
,” Phys. Fluids
32
(4
), 041705
(2020
).9.
Y.
Wei
and M. J.
Thoraval
, “Maximum spreading of an impacting air-in-liquid compound drop
,” Phys. Fluids
33
, 061703
(2021
).10.
S.
Tasoglu
, G.
Kaynak
, A. J.
Szeri
, U.
Demirci
, and M.
Muradoglu
, “Impact of a compound droplet on a flat surface: A model for single cell epitaxy
,” Phys. Fluids
22
(8
), 082103
(2010
).11.
Y. H.
Mori
, “Configurations of gas-liquid two-phase bubbles in immiscible liquid media
,” Int. J. Multiphase Flow
4
(4
), 383
–396
(1978
).12.
F.
Zhou
, L.
Wang
, Z.
Xu
, Q.
Liu
, M.
Deng
, and R.
Chi
, “Application of reactive oily bubbles to bastnaesite flotation
,” Miner. Eng.
64
, 139
–145
(2014
).13.
L.
Su
, Z.
Xu
, and J.
Masliyah
, “Role of oily bubbles in enhancing bitumen flotation
,” Miner. Eng.
19
(6–8
), 641
–650
(2006
).14.
D. C.
Blanchard
, “Sea-to-air transport of surface active material
,” Science
146
(3642
), 396
–397
(1964
).15.
D. C.
Blanchard
, “The ejection of drops from the sea and their enrichment with bacteria and other materials: A review
,” Estuaries
12
(3
), 127
–137
(1989
).16.
D. C.
Blanchard
, “Bubble scavenging and the water-to-air transfer of organic material in the sea
,” Appl. Chem. Protein Interfaces
18
, 360
–387
(1975
).17.
P. L.
Walls
, J. C.
Bird
, and L.
Bourouiba
, “Moving with bubbles: A review of the interactions between bubbles and the microorganisms that surround them
,” Am. Zool.
54
(6
), 1014
–1025
(2014
); available at https://pubmed.ncbi.nlm.nih.gov/25096288/.18.
F. S.
Ehrenhauser
, P.
Avij
, X.
Shu
, V.
Dugas
, I.
Woodson
, T.
Liyana-Arachchi
, Z.
Zhang
, F. R.
Hung
, and K. T.
Valsaraj
, “Bubble bursting as an aerosol generation mechanism during an oil spill in the deep-sea environment: Laboratory experimental demonstration of the transport pathway
,” Environ. Sci.: Processes Impacts
16
(1
), 65
–73
(2014
).19.
A. A.
Kulkarni
and J. B.
Joshi
, “Bubble formation and bubble rise velocity in gas-liquid systems: A review
,” Ind. Eng. Chem. Res.
44
(16
), 5873
–5931
(2005
).20.
H.
Tsuge
and H.
Shin-Ichi
, “Bubble formation from an orifice submerged in liquids
,” Chem. Eng. Commun.
22
(1–2
), 63
–79
(1983
).21.
I.
Chakraborty
, B.
Ray
, G.
Biswas
, F.
Durst
, A.
Sharma
, and P. S.
Ghoshdastidar
, “Computational investigation on bubble detachment from submerged orifice in quiescent liquid under normal and reduced gravity
,” Phys. Fluids
21
(6
), 062103
(2009
).22.
T. X. X.
Tate
, “On the magnitude of a drop of liquid formed under different circumstances
,” London, Edinburgh, Dublin Philos. Mag. J. Sci.
27
(181
), 176
–180
(1864
).23.
Y.
Zhou
, B.
Ji
, X.
Yan
, P.
Jin
, J.
Li
, and N.
Miljkovic
, “Asymmetric bubble formation at rectangular orifices
,” Langmuir
37
(14
), 4302
–4307
(2021
).24.
Y.
Zhou
, B.
Ji
, C.
Zhao
, and H.
Bo
, “Bubble formation from a submerged orifice in a thin liquid layer: Detachment and bursting
,” Phys. Fluids
33
(1
), 013305
(2021
).25.
S.
Wang
, Y.
Zhang
, J. C.
Meredith
, S. H.
Behrens
, M. K.
Tripathi
, and K. C.
Sahu
, “The dynamics of rising oil-coated bubbles: Experiments and simulations
,” Soft matter
14
(14
), 2724
–2734
(2018
).26.
B.
Ji
, Z.
Yang
, and J.
Feng
, “Oil-coated bubble formation from submerged coaxial orifices
,” Phys. Rev. Fluids
6
(3
), 033602
(2021
).27.
A.
Akbari
and J. H.
Reghan
, “Liquid-bridge stability and breakup on surfaces with contact-angle hysteresis
,” Soft Matter
12
(32
), 6868
–6882
(2016
).28.
J. M.
Montanero
and P.
Alberto
, “Review on the dynamics of isothermal liquid bridges
,” Appl. Mech. Rev.
72
(1
), 010803
(2020
).29.
Y.-J.
Chen
and P. H.
Steen
, “Dynamics of inviscid capillary breakup: Collapse and pinchoff of a film bridge
,” J. Fluid Mech.
341
, 245
–267
(1997
).30.
X.
Zhang
, R. S.
Padgett
, and O. A.
Basaran
, “Nonlinear deformation and breakup of stretching liquid bridges
,” J. Fluid Mech.
329
, 207
–245
(1996
).31.
S. J.
Kim
, J.
Hasanyan
, B. J.
Gemmell
, S.
Lee
, and S.
Jung
, “Dynamic criteria of plankton jumping out of water
,” J. R. Soc. Interface
12.111
, 20150582
(2015
).32.
O. E.
Yildirim
and O. A.
Basaran
, “Deformation and breakup of stretching bridges of Newtonian and shear-thinning liquids: Comparison of one-and two-dimensional models
,” Chem. Eng. Sci.
56
(1
), 211
–233
(2001
).33.
S. J.
Kim
, S.
Kim
, and S.
Jung
, “Extremes of the pinch-off location and time in a liquid column by an accelerating solid sphere
,” Phys. Rev. Fluids
3
, 084001
(2018
).34.
S.
Jung
, “Pinch-off dynamics to elucidate animal lapping
,” Phys. Rev. Fluids
6
, 073102
(2021
).35.
J.
Ma
, J.
Li
, P.
Zhou
, Y.
Song
, L.
Chai
, and C. Q.
Zhou
, “A viewpoint on the dynamics of bubble formation from a submerged nozzle
,” Eur. J. Mech.-B
78
, 276
–283
(2019
).© 2021 Author(s). Published under an exclusive license by AIP Publishing.
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