Measurement of Behavioral Properties of Entrained Ambient Water in a Stratified Bubble Plume

Seol, Dong-Guan; Bryant, Duncan B.; Socolofsky, Scott A.

doi:10.1061/(asce)hy.1943-7900.0000109

Cited by 22 publications

(40 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For that experiment, h S was generally less than h P , and the plume could be classified as crossflow dominated, similar in appearance to Fig. 1c, but with the Seol et al (2009)), (b) pure crossflow with no stratification (h P = infinity), and (c) combined effects of stratification and crossflow for a stratification-dominated plume (h P < h S ). separation occurring because of the crossflow rather than the stratification.…”

Section: Introductionsupporting

confidence: 61%

Intercomparison of oil spill prediction models for accidental blowout scenarios with and without subsea chemical dispersant injection

Socolofsky

Adams

Boufadel

et al. 2015

Marine Pollution Bulletin

Self Cite

View full text Add to dashboard Cite

Section: Introductionsupporting

confidence: 61%

Intercomparison of oil spill prediction models for accidental blowout scenarios with and without subsea chemical dispersant injection

Socolofsky

Adams

Boufadel

et al. 2015

Marine Pollution Bulletin

Self Cite

View full text Add to dashboard Cite

“…LES configuration In this study, the large-eddy simulations use a rectangular prism domain with size (L x , L y , H) = (0.76, 0.76, 0.9) m to mimic a water tank in laboratory measurements (Seol et al 2009). Note that the pseudo-spectral flow solver in the LES uses periodic boundary conditions in the horizontal directions.…”

Section: Les Results Of Multiphase Buoyant Plumesmentioning

confidence: 99%

“…Socolofsky (2001) (also see Socolofsky & Adams 2003 performed a series of laser-induced fluorescence (LIF) measurements for buoyant plumes driven by air bubbles or oil droplets, as well as for inverted plumes driven by settling sediments. Seol, Bryant & Socolofsky (2009) performed LIF measurements to study both the instantaneous and the mean plume structures. Obtaining quantitative velocity information is very challenging in the laboratory due to the difficulty in controlling the bubble size in salt stratification and the complexity of matching the index of refraction throughout the ambient stratification.…”

mentioning

confidence: 99%

“…To validate the model and investigate the essential plume characteristics in a controlled environment, the key simulation parameters are chosen to be similar to those of the laboratory measurements of Seol et al (2009). In the simulation, a bubble plume is released from a localized source and rises through a stratified fluid column.…”

mentioning

confidence: 99%

“…This flow configuration mimics the typical laboratory set-up for studying multiphase buoyant plumes (e.g. Socolofsky & Adams 2005;Seol et al 2009). Let x = (x, y, z) = (x 1 , x 2 , x 3 ) with x and y being the horizontal coordinates and z being the vertical coordinate, and let u = (u, v, w) = (u 1 , u 2 , u 3 ) be the corresponding velocity components.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Large-eddy simulation and parameterization of buoyant plume dynamics in stratified flow

et al. 2016

Self Cite

View full text Add to dashboard Cite

Characteristics of laboratory-scale bubble-driven buoyant plumes in a stably stratified quiescent fluid are studied using large-eddy simulation (LES). As a bubble plume entrains stratified ambient water, its net buoyancy decreases due to the increasing density difference between the entrained and ambient fluids. A large fraction of the entrained fluid eventually detrains and falls along an annular outer plume from a height of maximum rise (peel height) to a neutral buoyancy level (trap height), during which less buoyant scalars (e.g. small droplets) are trapped and dispersed horizontally, forming quasi-horizontal intrusion layers. The inner/outer double-plume structure and the peel/intrusion process are found to be more distinct for cases with small bubble rise velocity, while weak and unstable when the slip velocity is large. LES results are averaged to generate distributions of mean velocity and turbulent fluxes. These distributions provide data for assessing the performance of previously developed closures used in one-dimensional integral plume models. In particular, the various LES cases considered in this study yield consistent behaviour for the entrainment coefficients for various plume cases. Furthermore, a new continuous peeling model is derived based on the insights obtained from LES results. Comparing to previous peeling models, the new model behaves in a more self-consistent manner, and it is expected to provide more reliable performance when applied in integral plume models.

show abstract

Intrusion dynamics of particle plumes in stratified water with weak crossflow: Application to deep ocean blowouts

Wang

Adams

2016

JGR Oceans

View full text Add to dashboard Cite

We present an experimental study of particle plumes in ambient stratification and a mild current. In an inverted framework, the results describe the fate of oil droplets released from a deep ocean blowout. A continuous stream of dense glass beads was released from a carriage towed in a salt‐stratified tank. Nondimensional particle slip velocity UN ranged from 0.1 to 1.9, and particles with UN ≤ 0.5 were observed to enter the intrusion layer. The spatial distributions of beads, collected on a bottom sled towed with the source, present a Gaussian distribution in the transverse direction and a skewed distribution in the along‐current direction. Dimensions of the distributions increase with decreasing UN. The spreading relations can be used as input to far‐field models describing subsequent transport of particles or, in an inverted framework, oil droplets. The average particle settling velocity, Uave, was found to exceed the individual particle slip velocity, Us, which is attributed to the initial plume velocity near the point of release. Additionally, smaller particles exhibit a “group” or “secondary plume” effect as they exit the intrusion as a swarm. The secondary effect becomes more prominent as UN decreases, and might help explain observations from the 2000 Deep Spill field experiment where oil was found to surface more rapidly than predicted based on Us. An analytical model predicting the particle deposition patterns was validated against experimental measurements, and used to estimate near‐field oil transport under the Deepwater Horizon spill conditions, with/without chemical dispersants.

show abstract

Measurement of Behavioral Properties of Entrained Ambient Water in a Stratified Bubble Plume

Cited by 22 publications

References 23 publications

Intercomparison of oil spill prediction models for accidental blowout scenarios with and without subsea chemical dispersant injection

Intercomparison of oil spill prediction models for accidental blowout scenarios with and without subsea chemical dispersant injection

Large-eddy simulation and parameterization of buoyant plume dynamics in stratified flow

Intrusion dynamics of particle plumes in stratified water with weak crossflow: Application to deep ocean blowouts

Contact Info

Product

Resources

About