Experimental studies on the shape and motion of air bubbles in viscous liquids

Liu, Liu; Yan, Hongjie; Zhao, Guojian

doi:10.1016/j.expthermflusci.2014.11.018

Cited by 147 publications

(85 citation statements)

References 45 publications

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“…The main issue is the conditioning of the bubble in the initial state. In our experiments, the fast and slow bubbles were produced by the mechanism of the initial shape deformation, which is explained in details in the study of Liu et al [16]. For whatever reason, it is obvious that all of these reasons mentioned above can influence one parameter, i.e.…”

Section: Bubble Terminal Velocity In Watermentioning

confidence: 97%

“…Celata et al [39,40] and Tomiyama [51] pointed out that the reasons are not completely understood at present and they considered that the surface contamination, evolution of the wake structure or residual bubble shape oscillation may result in the phenomena of widely scattered velocities. However, the studies of Tomiyama et al [12] and Liu et al [16] showed that the initial shape deformation is expected to the main reason for widely scattered rising velocities. Especially, it is worth noting that recently Peters and Els [52] designed a special experimental setup and successfully produced slow and fast bubbles from tap water.…”

Section: Bubble Terminal Velocity In Watermentioning

confidence: 98%

“…1 [16]. The experiments were carried out in a rectangular organic glass tank filled with water or glycerin aqueous solution.…”

Section: Experimental Set-upmentioning

confidence: 99%

“…In gas-liquid two-phase flows, bubble dynamics, especially the bubble shape and rising velocity, are key parameters that affect the behavior of the gas-liquid two-phase flow, such as void fraction, gas residence time and gas-liquid interface transferring properties. Substantial work, including theoretical [6][7][8][9][10], experimental [11][12][13][14][15][16] as well as numerical attempts [17][18][19][20], have been done to improve the understanding of bubble dynamics in their great diversity.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Experimental studies on the terminal velocity of air bubbles in water and glycerol aqueous solution

Liu¹,

Yan²,

Zhao³

et al. 2016

Experimental Thermal and Fluid Science

Self Cite

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Section: Bubble Terminal Velocity In Watermentioning

confidence: 97%

Section: Bubble Terminal Velocity In Watermentioning

confidence: 98%

“…1 [16]. The experiments were carried out in a rectangular organic glass tank filled with water or glycerin aqueous solution.…”

Section: Experimental Set-upmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental studies on the terminal velocity of air bubbles in water and glycerol aqueous solution

Liu¹,

Yan²,

Zhao³

et al. 2016

Experimental Thermal and Fluid Science

Self Cite

View full text Add to dashboard Cite

“…This phenomenon occurs because big bubbles have higher rising speeds than small bubbles [30]. The big bubbles have a high speed that allows them to get into the slag layer, but the small bubbles are more likely to be pushed to the flange tip or web by flows before they have time to get into the slag layer.…”

Section: Effect Of Funnel Immersion Depthmentioning

confidence: 97%

Study on the Fluid Flow in a Semi-Open-Stream-Poured Beam Blank Continuous Casting Mold with Submerged Refractory Funnels by Multiphase Modeling

Zhang

Chen

Long

et al. 2016

Metals

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Abstract:The flow transport of a 420ˆ320ˆ90 mm beam blank continuous casting mold that used open-stream pouring combined with submerged refractory funnels was studied. By considering the dynamic similarity, geometric similarity, and air entrapment quantity similarity, a full-size water model was established. Meanwhile, the 3D mathematical models that included three phases were applied. Through the combination of the water model and the mathematical model, the distribution and morphology of the phases in the mold were investigated. The results indicate that bubbles existed in the molten steel due to entrapment and the flow pattern was different from that of the full protection-poured mold. Furthermore, the effects of funnel immersion depth and funnel diameter on the bubbles' impact depth, funnel's inside wall shear stress, and overall area of the air/steel interface were discussed. The results provide useful information for the industrial continuous casting process.

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Directional and Continuous Transport of Gas Bubbles on Superaerophilic Geometry‐Gradient Surfaces in Aqueous Environments

Cao

Zhang

et al. 2017

Adv Funct Materials

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Due to the direct and sufficient contacting with the aqueous environment, the directional and continuous transport of gas bubbles on open surface without energy input will advance a variety of applications in heat transfer, selective aeration, water electrolysis, etc. Unfortunately, the behaviors of gas bubbles in aqueous environment are mainly dominated by the buoyancy moving gas bubbles upward, resulting in their difficult manipulation. Therefore, realizing the directional and continuous transport of gas bubbles on open surface still remains a great challenge. Herein, a novel strategy integrating the superaerophilic wettability with geometry‐gradient structure is proposed, which can engender high driving force and low hysteresis resistance force acting on the gas bubbles. In experiment, these fabricated superaerophilic geometry‐gradient polyethylene surfaces demonstrate distinguished performance of directionally and continuously transporting gas bubbles on open surfaces without energy input. In addition, the antibuoyancy bubble transportation device and the underwater bubble microreactor are successfully prepared in this manuscript, both of which illustrate the feasibility in the applications of complex environment and gas‐related fields. It can be envisioned that this study will promote the understanding and development of underwater functional superwettability materials to achieve the directional and continuous transport of gas bubbles on the open surface.

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Experimental studies on the shape and motion of air bubbles in viscous liquids

Cited by 147 publications

References 45 publications

Experimental studies on the terminal velocity of air bubbles in water and glycerol aqueous solution

Experimental studies on the terminal velocity of air bubbles in water and glycerol aqueous solution

Study on the Fluid Flow in a Semi-Open-Stream-Poured Beam Blank Continuous Casting Mold with Submerged Refractory Funnels by Multiphase Modeling

Directional and Continuous Transport of Gas Bubbles on Superaerophilic Geometry‐Gradient Surfaces in Aqueous Environments

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