Studies of interface deformations in single- and multi-layered liquid baths due to an impinging gas jet

Qian, Fucai; Mutharasan, Raj; Farouk, Bakhtier

doi:10.1007/s11663-996-0004-0

Cited by 61 publications

(42 citation statements)

References 4 publications

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“…At higher distances H/D > 10, the minimum film thickness begins to increase considerably. Such a transition was also observed for stationary high velocity gas jets impinging onto thicker water layers [41,42]. For all experiments in Fig.…”

Section: Minimum Film Thickness H Minsupporting

confidence: 71%

Deformation and dewetting of thin liquid films induced by moving gas jets

Berendsen

Zeegers

Darhuber

2013

Journal of Colloid and Interface Science

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Section: Minimum Film Thickness H Minsupporting

confidence: 71%

Deformation and dewetting of thin liquid films induced by moving gas jets

Berendsen

Zeegers

Darhuber

2013

Journal of Colloid and Interface Science

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“…Firstly, because the upper light phase (molten slag) was considered in the CFD simulations but not in the theoretical calculations, the predicted penetration depths by the CFD model are deeper than those calculated by Equation 16. This is in line with the result of Qian et al [9] who demonstrated that the penetration depth of jets penetrating into a multilayered liquid bath is larger than that into a single-layer liquid bath. Secondly, Equation 16 was developed under the room temperature condition, where the impacting dynamic pressure of a jet decays more rapidly than that under the steelmaking temperature condition.…”

Section: Validation Of Modelsupporting

confidence: 92%

“…In the past decades, a large amount of fruitful works have been carried out for the jetting process in BOFs, e.g., cold modeling of air-water or air-oil-water systems, [1][2][3][4][5][6][7][8][9][10][11][12] mathematical modeling of air-water system, [13][14][15][16][17][18] and modeling of performance of a real top-blown BOF system. [19][20][21][22][23] These studies generally focused on the process phenomena involved, for example, the dimensions and profiles of cavity, the motion of phase interface, [ the flow field and mixing efficiency of the molten bath.…”

Section: Introductionmentioning

confidence: 99%

Transferring Characteristics of Momentum/Energy during Oxygen Jetting into the Molten Bath in BOFs: A Computational Exploration

Kuang

et al. 2015

steel research int.

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This paper presents a numerical study of transferring characteristics of momentum/energy during oxygen jetting into the slag-metal molten bath in basic oxygen furnaces by a multifluid volume of fluid model. The evolution of the momentum/energy and turbulence of jets along their axial travel were studied. The results were quantitatively compared within a wide range of oxygen supply pressures, at which the jets may be at under-or overexpanding state. The efficiency of the momentum/energy transfer from the jets to the molten bath was also assessed with respect to lance height and operation pressure. The numerical results show that the momentum and kinetic energy for the jets suffering from shock waves likely cause more intensive damping compared to the jets with expansion waves. The turbulence kinetic energy and turbulence dissipation rate are observed to firstly increase and then decrease. This effect is more pronounced at a lower operation pressure. Based on these results, the optimum lance height was identified for a rapid slagging operation. It is also shown that the efficiency of the energy transfer from the jets to the molten bath is very low. Decreasing lance height or increasing operation pressure promotes the efficiency of the momentum transfer from the jets to the molten bath but lowers the efficiency of the kinetic energy transfer.

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“…The cavity dimension, which is closely related to the interfacial area in actual production, 136) is influenced by nozzle diameter and angle, lance height, oxygen pressure, flow rate, slag properties, etc. [13][14][15]41,43,76,99,137) The operating parameters such as oxygen pressure and lance height have a much bigger impact on the cavity formation compared to the slag properties. 46,138) Moreover, a reasonable cavity profile can attain a better mixing effect in the converter steelmaking process.…”

Section: Stirring and Mixing Behaviormentioning

confidence: 99%