Two-phase velocity measurements in dense particle-laden jets

Barlow, Robert S.; Morrison, C. Q.

doi:10.1007/bf00575341

Cited by 34 publications

(11 citation statements)

References 13 publications

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“…(1984aModarress etal. ( , 1984b, Boerner et al (1986), Shuen et al (1985), Nouri et al (1987), Tsuji et al (1988), Barlow and Morrison (1990), Zoltani and Bicen (1990), and Fan et al (1990) provided data that can help to understand the behavior of two-phase turbulent free jets.…”

Section: Introductionmentioning

confidence: 99%

An experimental study of two-phase turbulent coaxial jets

Fan

Zhao

Cen

1992

Experiments in Fluids

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The effect of solid particles on the flow structure of axisymmetric turbulent coaxial jets has been studied. A laser-Doppler anemometer was used to measure the mean and fluctuation velocities of both phases, and a Malvern laser diffraction instrument was applied to measure particle size and concentration. A series of velocity ratios and particle loading ratios were investigated, and the results were analysed for the effects of these ratios on the mixing characteristic and the similarity behavior of the jet. The effects of particle diameter and its distribution were also studied as well as their influence on the coaxial jet behavior.

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Section: Introductionmentioning

confidence: 99%

An experimental study of two-phase turbulent coaxial jets

Fan

Zhao

Cen

1992

Experiments in Fluids

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“…However, it should be noted that most work regarding solid-laden jets has been done with a relatively low solid loading ratio of m * < 1. Limited studies performed on dense jets have found that increasing the solid loading ratio beyond the range of m * ≈ 1 further reduces velocity fluctuations and the spreading rate [17].…”

Section: Previous Studiesmentioning

confidence: 99%

Dry Fuel Jet Half-Angle Measurements and Correlation for an Entrained Flow Gasifier

et al. 2018

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Reduced order models (ROMs) are increasingly applied to entrained flow gasification development due to reduced computational requirements relative to computational fluid dynamics (CFD) models. However, they require greater a posteriori knowledge of the reactor physics. A significant parameter influencing ROM outputs is the jet half-angle of the solid fuel and oxidant mixture in the gasifier. Thus, it is important to understand the geometry of the jet in the gasifier, and how it is dependent on operating parameters, such as solid and carrier gas flow rates. In this work, an existing model for jet half-angles, which considers the ratio of surrounding gas density to jet core density, is extended to a dry solids jet with impinging gas. The model is fitted to experimental jet half-angles. The jet half-angle of a non-reactive flow was measured using laser-sheet imaging for solid fluxes in the range of 460–880 kg/m2·s and carrier gas fluxes in the range of 43–90 kg/m2·s at the transport line outlet. Jet half-angles ranged from 5.6° to 11.3°, increasing with lower solid/gas loading ratios. CFD simulations of two reactive conditions, with solid and gas fluxes similar to experiments, were used to test the applicability of the proposed jet half-angle model.

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“…Experimental studies of particle-laden jets have been based on point measurements (e.g., Barlow and Morrison, 1990;Calvo et al, 2009) and flow visualizations (e.g., Cardoso and Zarrebini 2001;Li, 2006), but only a limited number of studies presented global velocity measurement (e.g. Jiang et al, 2005;Sadr and Klewicki, 2005).…”

Section: Introductionmentioning

confidence: 99%

Two-phase velocity measurement in a particle-laden jet

Liu

Lam

2013

Journal of Hydro-environment Research

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A horizontally discharging jet laden with solid sediment particles is investigated experimentally. The submerged jet discharges water with an initially horizontal direction into stagnant water of the same density but the presence of sediment particles produces jet effluent having a combined density greater than that of the ambient water. A modified particle-imaging velocimetry (PIV) technique is applied to estimate the velocity fields of the solid particle phase and the jet fluid liquid phase. Phase separation is achieved optically between the scattered light signals from the particles and the laser-induced fluorescence signal from the jet fluid dozed with a fluorescent dye. It is found that initial sediment concentrations below 0.1% volume fraction do not cause significant changes to the global properties of the jet flow. In jets of higher initial sediment concentrations, settling of sand particles are observed to drag the jet to spread with a downward-bending mean trajectory. Intensive particle-flow interaction is also observed in jets of high sediment concentrations.

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Two-phase velocity measurements in dense particle-laden jets

Cited by 34 publications

References 13 publications

An experimental study of two-phase turbulent coaxial jets

An experimental study of two-phase turbulent coaxial jets

Dry Fuel Jet Half-Angle Measurements and Correlation for an Entrained Flow Gasifier

Two-phase velocity measurement in a particle-laden jet

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