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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

Figures

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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
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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
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Unsteady variations of Biot number at the bottom surface of the splat for different Stefan numbers of the splat
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Unsteady variation of Biot number at the bottom surface of the splat for different dimensionless initial temperatures of the splat
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Unsteady variations of Biot number at the bottom surface of the splat for different dimensionless nucleation temperatures of the splat

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