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TECHNICAL PAPERS: Heat Transfer in Manufacturing

Heat Transfer Coefficient in Rapid Solidification of a Liquid Layer on a Substrate

[+] Author and Article Information
P. S. Wei, F. B. Yeh

Institute of Mechanical Engineering, National Sun Yat-Sen University, Kaohsiung Taiwan, R.O.C.

J. Heat Transfer 122(4), 792-800 (May 08, 2000) (9 pages) doi:10.1115/1.1318208 History: Received September 07, 1999; Revised May 08, 2000
Copyright © 2000 by ASME
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References

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Figures

Grahic Jump Location
Physical model and coordinate system
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Numerical clarification, (a) different grid systems (splat, substrate) on solutions; (b) predicted dimensional interface velocities and temperatures from Wang and Matthys 30 and this work.
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Dimensionless thicknesses of the solidified splat and melted substrate versus time for different contact Biot numbers
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Dimensionless enthalpies in the splat and substrate on the contact surface versus time for different contact Biot numbers
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Dimensionless velocity and enthalpy at the solidification front versus displacement of the interface for different contact Biot numbers.
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Unsteady variations of Biot number at the bottom surface of the splat for different contact Biot numbers
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Unsteady variations of Biot number at the bottom surface of the splat for different dimensionless solid conductivities of the substrate
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Unsteady variations of Biot number at the bottom surface of the splat for different dimensionless liquid conductivities of the substrate
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Unsteady variations of Biot number at the bottom surface of the splat for different dimensionless equilibrium melting temperatures of the substrate
Grahic Jump Location
Unsteady variations of Biot number at the bottom surface of the splat for different splat-to-substrate specific heat ratios
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Unsteady variations of Biot number at the bottom surface of the splat for different substrate-to-splat density ratios
Grahic Jump Location
Unsteady variations of Biot number at the bottom surface of the splat for different Stefan numbers of the splat
Grahic Jump Location
Unsteady variation of Biot number at the bottom surface of the splat for different dimensionless initial temperatures of the splat
Grahic Jump Location
Unsteady variations of Biot number at the bottom surface of the splat for different dimensionless nucleation temperatures of the splat

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