The dynamics of single air bubbles and alcohol drops in sunflower oil at various temperatures

Duangsuwan, Wiriya; Tüzün, U.; Sermon, Paul A.

doi:10.1002/aic.12324

Cited by 11 publications

(5 citation statements)

References 33 publications

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“…However, other effects are worth consideration. For example, dissolution of bubbles in a gas saturated media is driven by a number of effects including the Ostwald coefficient 25 of the gas in question, the diffusion coefficient of the gas in the media and the surface tension 26 of the gas/liquid interface. Epstein and Plesset reported that the dissolution time under these conditions can be calculated.…”

Section: Resultsmentioning

confidence: 99%

Probing the mechanisms of enhanced crystallisation of APS in the presence of ultrasound

Birkin

Youngs

Truscott

et al. 2022

Phys. Chem. Chem. Phys.

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Section: Resultsmentioning

confidence: 99%

Probing the mechanisms of enhanced crystallisation of APS in the presence of ultrasound

Birkin

Youngs

Truscott

et al. 2022

Phys. Chem. Chem. Phys.

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“…16 or 24 for K is generally taken for the drag coefficient of spherical particles at low Reynolds numbers . Additionally, Rodrigue provides an expression for the motion of gas bubbles rising steadily in uncontaminated viscous Newtonian fluids:

\begin{array}{l} center & C_{D} = \frac{K}{Re} {true[\begin{matrix} left \\ center {(\frac{1}{2} + 32 θ + \frac{1}{2} \sqrt{1 + 128 θ})}^{1 / 3} \\ center + {(\frac{1}{2} + 32 θ - \frac{1}{2} \sqrt{1 + 128 θ})}^{1 / 3} \\ center + true(0.036 {(\frac{128}{3})}^{1 / 9} {Re}^{8 / 9} M o^{1 / 9} true) \end{matrix} true]}^{9 true/ 4} \\ center & w i t h \\ center & K = 16 \\ center & θ = 5.1 \times 10^{- 6} {Re}^{8 true/ 3} M o^{1 true/ 3} \end{array}

…”

Section: Resultsmentioning

confidence: 99%

“…[29,30] Additionally, Rodrigue provides an expression for the motion of gas bubbles rising steadily in uncontaminated viscous Newtonian fluids: [31,32] …”

Section: Bubble Rise Velocitymentioning

confidence: 99%

Behaviour and dynamics of two bubbles in conjunct condition in high‐viscosity liquids

Feng

Bao

et al. 2016

Can J Chem Eng

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Two bubbles in conjunct condition are often encountered in high-viscosity liquids, but have received very little attention in the literature. The conjunct bubbles rise together with unchanged shapes and constant velocities, showing some unique properties compared to single bubbles. The current research built on the previous work of Cai et al., [1] and extended the bubble size ratio (k) to the range 1.0-1.2. The formation and motion characteristics of conjunct bubbles made by direct collision of two in-line bubbles were investigated, including the effects of bubble volume, bubble size ratio, and liquid viscosity. Models for the conjunct bubbles and the single bubbles were provided for predicting the projected area diameters and the rising velocities respectively, and the predicted values closely agreed with the measurements in glycerol-water solutions with Morton numbers in the range of 1.690-661.8. The dynamic forces on the conjunct bubbles were analyzed, and a succinct algorithm was proposed for calculating the drag forces on the conjunct bubbles and the interaction force between the two bubbles.

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“…For a bubble rising in oil, relevant studies have seldom been reported. In practice, diverse oils are an inseparable component of engineering applications 9 . General oils are more viscous than water, inducing higher viscous force for the bubble motion.…”

Section: Introductionmentioning

confidence: 99%

Quantitative characterization of bubble evolution in mineral oil for different air‐injection nozzles

Mao

Kang

Teng

et al. 2020

Asia-Pacific J Chem Eng

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The aim of the present study is to reveal characteristics of a rising bubble in quiescent mineral oil. Three air-injection nozzles with outlet diameters of 1.0, 2.0, and 3.0 mm were selected. Consecutively rising bubbles were produced as air was injected into mineral oil. Bubble visualization was implemented using the high-speed photography technique. Bubble images captured were processed using an in-house code to calculate the equivalent bubble diameter and the bubble velocity. The computational fluid dynamics technique was used to simulate flows around the rising bubble. The bubble trajectory, the bubble aspect ratio, and the bubble velocity were compared among the three nozzles. Correlations between nondimensional parameters were constructed. The results show that the bubble motion in mineral oil is stabilized in comparison with that in deionized water. Spherical and ellipsoidal shapes are prevalent.The bubble trajectory is rectilinear, which is independent of the nozzle outlet diameter. After the bubble separates from the nozzle, the equilibrium state is promptly attained. Smooth bubble evolution is ascribed to suppressed wake vortices immediately downstream of the bubble. Small nozzle outlet diameter is responsible for high aspect ratio but small Eötvös number. Values of the Weber number are much smaller than those associated with deionized water.The drag coefficient descends continuously with increasing Reynolds number (Re); the correspondence between the drag coefficient and Re is explicitly sensitive to the nozzle outlet diameter. K E Y W O R D Sbubble, bubble aspect ratio, bubble trajectory, drag coefficient, mineral oil, visualization

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The dynamics of single air bubbles and alcohol drops in sunflower oil at various temperatures

Cited by 11 publications

References 33 publications

Probing the mechanisms of enhanced crystallisation of APS in the presence of ultrasound

Probing the mechanisms of enhanced crystallisation of APS in the presence of ultrasound

Behaviour and dynamics of two bubbles in conjunct condition in high‐viscosity liquids

Quantitative characterization of bubble evolution in mineral oil for different air‐injection nozzles

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