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RESEARCH PAPER

Numerical Analysis on the Impact Behavior of Molten Metal Droplets Using a Modified Splat-Quench Solidification Model

[+] Author and Article Information
D. Sivakumar, H. Nishiyama

Electromagnetic Intelligent Fluids Laboratory, Institute of Fluid Science, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

J. Heat Transfer 126(6), 1014-1022 (Jan 26, 2005) (9 pages) doi:10.1115/1.1833365 History: Received December 10, 2003; Revised July 23, 2004; Online January 26, 2005
Copyright © 2004 by ASME
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References

Figures

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Schematic sketch of the spreading droplet during the impact process
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The shape of the spreading droplet at the instant t0=D/W from the start of impact t=0
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The variation of solidification constant (U) with the substrate surface temperature for different molten metals
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The instantaneous variation of the solidification constant (U) during the droplet impact process for a molten tin droplet impinging on a stainless steel substrate
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Comparison of the present model results with the experimental measurements for the evolution of the spreading droplet radius for the impact of molten tin droplets impinging on stainless steel substrates kept at different temperature. The experimental measurements, shown with filled circles (•), are taken from Ref. 14. The numerical predictions of Pasandideh-Fard et al. model, shown with thick dashed lines (––-), are taken from Ref. 14, and the predictions obtained from the present model are shown with thick continuous lines (—). The predictions of Delplanque and Rangel model 12 for different values of ε are shown with thin lines. ε=0.39 (–⋅–⋅), ε=0.5 (–), and ε=0.74 ([[dashed_line]]).
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Comparison of the present model results with the experimental measurements on the evolution of the spreading droplet radius for the impact of molten tin droplets on different substrate materials. The experimental measurements are taken from the literature. (a) Aziz and Chandra 25, and (b) Tarpaga et al. 32.
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The present model predictions on Rmax for the impact of molten tin droplets on stainless substrate surfaces. (a) ▪ Pasandideh-Fard et al. 14, • Aziz and Chandra 25, and ♦ Trapaga et al. 32. (b) ○ Amada et al. 33.
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Oh-We diagram showing the droplet impact cases analyzed in the present study
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Numerical predictions on the instantaneous variation of R for the impact of molten metal droplets with varying We
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Numerical predictions on the instantaneous variation of R for the impact of molten metal droplets with varying Oh
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Numerical predictions on the instantaneous variation of R for the impact of molten metal droplets with varying U
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Plots illustrating the limitations of the present model for the impact of molten tin droplets with different impinging conditions
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Plots illustrating the limitations of the present model for the impact of molten nickel droplets with different impinging conditions

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