Consideration of the dynamic forces during bubble growth in a capillary tube

Vázquez, A.; Leifer, I.; Sánchez, Rodrigo

doi:10.1016/j.ces.2010.03.041

Cited by 27 publications

(17 citation statements)

References 45 publications

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“…Such situations are observed for alternative bubble departures in engine oil. The obtained results confirm the conclusions presented in the article by Vazquez et al (2010).…”

Section: Discussionsupporting

confidence: 92%

Non-Linear Analysis of Air Pressure Fluctuations During Bubble Departure Synchronisation

Dzienis

Mosdorf

Wyszkowski

et al. 2019

Acta Mechanica Et Automatica

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In the recent paper, non-linear methods of data analysis were used to study bubble departure synchronisation. In the experiment, bubbles were generated in engine oils from two neighbouring brass nozzles (with an inner diameter of 1 mm). During the experiment, the time series of air pressure oscillations in the air supply system and voltage changes on phototransistor were recorded. The analysis of bubble departure synchronisation was performed using a correlation coefficient. The following methods of non-linear data analysis are considered. Fast Fourier Transformation, autocorrelation, attractor reconstruction, correlation dimension, largest Lyapunov exponent and recurrence plot analysis were used to examine the correlation between bubbles behaviour and character of pressure fluctuations. Non-linear analysis of bubble departure synchronisation revealed that the way of bubble departures from two neighbouring nozzles does not depend simply on the character of pressure fluctuations in the nozzle air supply systems. The chaotic changes of the air pressure oscillations do not always determine the chaotic bubble departures.

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“…Such situations are observed for alternative bubble departures in engine oil. The obtained results confirm the conclusions presented in the article by Vazquez et al (2010).…”

Section: Discussionsupporting

confidence: 92%

Non-Linear Analysis of Air Pressure Fluctuations During Bubble Departure Synchronisation

Dzienis

Mosdorf

Wyszkowski

et al. 2019

Acta Mechanica Et Automatica

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“…For bubble flows below a critical flow rate, bubble size depends on orifice size while for flows above the critical flow rate, bubble size depends on both orifice size and flow rate [123]. At flow rates significantly greater than the critical flow rate, the gas escapes the seabed as a jet that fragments into a spectrum of bubble sizes [124], which relates to turbulence scales.…”

Section: Seepage Temporal Variabilitymentioning

confidence: 99%

A Synthesis Review of Emissions and Fates for the Coal Oil Point Marine Hydrocarbon Seep Field and California Marine Seepage

Leifer

2019

Geofluids

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Anthropogenic oil in the ocean is of great concern due to its potential immediate and long-term impacts on the ecosystem, economy, and society, leading to intense societal efforts to mitigate and reduce inputs. Sources of oil in the ocean (in the order of importance) are natural marine seepage, run-off from anthropogenic sources, and oil spills, yet uncertainty and variability in these budgets are large, particularly for natural seepage, which exhibits large spatial and temporal heterogeneity on local to regional scales. When source inputs are comparable, discriminating impacts is complicated, because petroleum is both a bioavailable, chemosynthetic energy source to the marine ecosystem and a potential toxic stressor depending on concentration, composition, and period of time. This synthesis review investigates the phenomena underlying this complexity and identifies knowledge gaps. Its focus is on the Coal Oil Point (COP) seep field, arguably the best-studied example, of strong natural marine hydrocarbon seepage, located in the nearshore, shallow waters of the Northern Santa Barbara Channel, Southern California, where coastal processes complicate oceanography and meteorology. Many of our understandings of seep processes globally are based on insights learned from studies of the oil and gas emissions from the COP seep field. As one of the largest seep fields in the world, its impacts spread far as oil drifts on the sea surface and subsurface, yet much remains unknown of its impacts.

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“…7 c). The accompanying increase in air bubble volume results in a change to the buoyancy force, FB, acting on the bubble and to a change in the force acting on the bubble from the added mass, FAM; these forces are described by the following two equations [18,19]:…”

Section: Discussionmentioning

confidence: 99%

The Influence of Water Hardness Perturbations on Bubble Departure Dynamics

Dzienis

Mosdorf

Czarnecki

2021

Preprint

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The influence of small changes to water hardness on the nonlinear behaviour of liquid penetration into a capillary and the resulting air pressure fluctuations during air bubble formation are examined in this paper. Experiments were undertaken in which bubbles were generated both in water having a surface tensile force of σ = 72.2 mN/m and in an aqueous solution of calcium carbonate having a surface tensile force of σ = 75.4 mN/m, each contained in a glass capillary with an internal diameter of 1 mm. It is shown that both the maximum value of liquid penetration into the capillary and bubble growth time are affected by perturbations to the water hardness. The time it takes for the bubble to depart the capillary was estimated using the following nonlinear data analysis methods: time delay (τ), attractor reconstructions, correlation dimension (D), and largest Lyapunov exponent (λ). All estimates demonstrate that the pressure fluctuations in the c-c aqueous solutions and extent of liquid solution penetration into the capillary during the time between subsequent bubble departures behave chaotically.

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Consideration of the dynamic forces during bubble growth in a capillary tube

Cited by 27 publications

References 45 publications

Non-Linear Analysis of Air Pressure Fluctuations During Bubble Departure Synchronisation

Non-Linear Analysis of Air Pressure Fluctuations During Bubble Departure Synchronisation

A Synthesis Review of Emissions and Fates for the Coal Oil Point Marine Hydrocarbon Seep Field and California Marine Seepage

The Influence of Water Hardness Perturbations on Bubble Departure Dynamics

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