Droplet–surface impact at high pressures

Dupuy, P.M.; Kleinohl, N.; Fernandino, María; Jakobsen, Hugo A.; Svendsen, Hallvard F.

doi:10.1016/j.ces.2010.07.006

Cited by 7 publications

(6 citation statements)

References 15 publications

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“…However, for recovery boilers in the pulping industry, bouncing of droplets is favored as it reduces the heat exchanger fouling formed of ash-deposit (Mao et al, 1997). In high-pressure (up to 100 bar) liquid-gas separation equipment, bouncing, leading to a decreased performance of the equipment, is seen as one of the dominant phenomena due to high gas density (Dupuy et al, 2010). …”

Section: Motivation and Backgroundmentioning

confidence: 99%

Transition between coalescence and bouncing of droplets on a deep liquid pool

Zhao

Brunsvold

Munkejord

2011

International Journal of Multiphase Flow

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This study focused on the bouncing of sub-millimetric droplets (below 0.7 mm) of three different fluids, distilled water, technical ethanol and 1-propanol on a deep liquid pool of the same fluids. Four different flow regimes including low-energy-collision coalescence, bouncing, high-energycollision coalescence, and partial coalescence were observed in the experiments. These regimes were plotted in velocity-diameter diagrams, which showed that there was a diameter limit, D ≈ 0.2 mm, above which the low-energy-collision coalescence was inhibited. 1964). Based on stable restitution coefficients, which varied with fluids, the effects from both viscosity and surface tension were discussed. Further, a correlation (K = We · Oh −0.58 ) was generalized to characterize the two transitions between coalescence (both high-energy-and low-energy-collision types) and bouncing, and a comparison with the model and data of Huang and Zhang (in Petrol Sci 5:62-66, 2008) showed that the generalized model characterized the coalescence-bouncing threshold well for the experimental fluids in the present study and oil with much higher viscosity.

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Section: Motivation and Backgroundmentioning

confidence: 99%

Transition between coalescence and bouncing of droplets on a deep liquid pool

Zhao

Brunsvold

Munkejord

2011

International Journal of Multiphase Flow

View full text Add to dashboard Cite

show abstract

“…The procedure can be summarized as associating a region of influence to each discrete measurement and it is based on elemental statistical concepts. It was applied for dropletewall collision cases obtained from the experiments published in Dupuy et al (2010a).…”

Section: Resultsmentioning

confidence: 99%

“…Details on the experimental techniques and more results for the same system can be consulted in Dupuy et al (2010a). Furthermore the technique is consistent with error treatment.…”

Section: Droplets In High Pressure Natural Gas Processingmentioning

confidence: 93%

“…Some of the well known differences are the density increase by the gas load factor and the surface tension reduction. However, another aspect such as the collision outcomes are different and have no relation with the two previously mentioned effects (Dupuy et al, 2010a). Droplet collision outcomes are very often characterized using dimensionless maps based on the Reynolds and/ or Weber numbers.…”

Section: Droplets In High Pressure Natural Gas Processingmentioning

confidence: 99%

“…The particular situation observed at high pressures is that bouncing outcomes are much more dominant than at low pressures (Dupuy et al, 2010a), thus a better description of the outcome is needed. Furthermore, a more dense gas phase will influence the droplet trajectory more than the light gas case.…”

Section: Introductionmentioning

confidence: 99%

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