Measurement of the Average Two-Dimensional Surface Temperature Distribution of Drops in a Melt Atomization Process

Kirmse, Clemens; Chaves, H.

doi:10.1007/s11666-015-0217-3

Cited by 8 publications

(8 citation statements)

References 11 publications

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“…In Figure , a typical sketch of an annular slit atomization nozzle is shown for an industrial gadget . In detail, the process starts with the melting and superheating of the steel alloy in the tundish.…”

Section: Introductionmentioning

confidence: 99%

“…When the stopper rod is lifted, the liquid steel passes through the nozzle geometry and creates an emerging gravity‐driven free falling jet. The usual production process atomizes the jet by a vacuum inert gas with high atomization pressures, see Kirmse and Chaves, Dubberstein . For that purpose, an array of stainless steel nozzles for the atomizing gas surrounds the centered liquid steel jet.…”

Section: Introductionmentioning

confidence: 99%

“…[4] In Figure 1, a typical sketch of an annular slit atomization nozzle is shown for an industrial gadget. [5] In detail, the process starts with the melting and superheating of the steel alloy in the tundish. When the stopper rod is lifted, the liquid steel passes through the nozzle geometry and creates an emerging gravity-driven free falling jet.…”

Section: Introductionmentioning

confidence: 99%

“…The usual production process atomizes the jet by a vacuum inert gas with high atomization pressures, see Kirmse and Chaves, Dubberstein. [5,6] For that purpose, an array of stainless steel nozzles for the atomizing gas surrounds the centered liquid steel jet. The resulting spray droplets and ligaments have a size range of 0.04-2000 mm.…”

Section: Introductionmentioning

confidence: 99%

“…A lot of authors discussed free falling melt jet atomization in the literature. [4][5][6]8,[10][11][12][13][14][15] Different nozzle systems for the melt atomization are simulated and discussed by Zeoli et al [15] The effect of a swirling atomizer, an inner-jet atomizer, and an annular slit atomizer for the liquid metal jet is investigated using the volume of fluid method (VOF). Based on an undisturbed incoming metal jet, the primary breakup is observed.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Influencing Parameter Study on Primary Breakup of Free Falling Steel Melt Jets Using Volume of Fluid Simulation

Neumann

Dubberstein

Chaves

et al. 2016

steel research int.

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The free falling liquid steel jet behavior is numerically investigated using implicit large eddy simulations (ILES) and the volume of fluid (VOF) approach. The research is focused on primary breakup phenomena near the nozzle using the standard open-source computational fluid dynamics library OpenFOAM. To quantify the influence of process and constructional parameters exclusively for the structure of a free falling liquid steel jet, several central conditions are explored. The calculations concentrate on disturbances at the nozzle inlet due to adverse inflow conditions. The jet behavior is caused by an asymmetrical lift of the stopper rod and a liquid steel rotation in the tundish based on the magnetic heating process, which is transported into the nozzle due to the conservation of angular momentum. The calculations with adjusted rotation show distinct influences with developing structures like helix or hollow-cone-shaped jets. Differences are observed based on the nozzle type. In particular, a tube nozzle (constant diameter) and an industrial nozzle setup (divergent-convergent shape) are investigated. The inflow conditions have a large influence on the tube nozzle, where the outflow is delayed and the jet disintegrates. However, the industrial nozzle type shows less impact, but the jet surface is in general more corrugated and disturbed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Influencing Parameter Study on Primary Breakup of Free Falling Steel Melt Jets Using Volume of Fluid Simulation

Neumann

Dubberstein

Chaves

et al. 2016

steel research int.

Self Cite

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Measurements of the Velocity of Drops in a Melt Atomization Process Using Particle Image Velocimetry

Kirmse

Chaves

2016

steel research int.

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This paper addresses the measurement of the two-dimensional velocity distribution of ligaments and drops during melt atomization. The result of the atomization process is influenced by numerous parameters and is still not well understood. Also due to the high temperatures involved in the process, in situ measurements are very scarce. Due to the fact that melt atomization is a process that cannot be rapidly repeated, two-dimensional measurement techniques are now the methods of choice. The velocity of the atomized particles is one quantity that can be used for diagnostics and understanding as well as for comparison with numerical studies. The atomization is done using an industrial vacuum inert gas atomization facility. The velocity measurements are performed using particle image velocimetry (PIV). The set-up and the application of this method are described in detail. The data evaluation of the velocity measurements shows only small differences between different metals. The melt jet breaks up into a hollow cone spray at approximately 60 mm from the nozzle in both investigated cases. The velocity is there in the range between 120 and 210 m s À1 . This result is in good quantitative agreement with numerical results. Figure 8. Comparison of the mean magnitudes of the two velocity distributions averaged across the first second (10 images) of the atomizations: X5CrNi18-10 steel (left) and X3CrNiMo13-4 steel (right). www.steel-research.de 1300 steel research int. 87 (2016) No. 10

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Tailoring of Thermophysical Properties of New TRIP/TWIP Steel Alloys to Optimize Gas Atomization

Korobeinikov

Chaves

Volkova

2020

Austenitic TRIP/TWIP Steels and Steel-Zirconia Composites

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Measurement of the Average Two-Dimensional Surface Temperature Distribution of Drops in a Melt Atomization Process

Cited by 8 publications

References 11 publications

Influencing Parameter Study on Primary Breakup of Free Falling Steel Melt Jets Using Volume of Fluid Simulation

Influencing Parameter Study on Primary Breakup of Free Falling Steel Melt Jets Using Volume of Fluid Simulation

Measurements of the Velocity of Drops in a Melt Atomization Process Using Particle Image Velocimetry

Tailoring of Thermophysical Properties of New TRIP/TWIP Steel Alloys to Optimize Gas Atomization

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