HYPERBOLIC STEFAN PROBLEM WITH APPLIED SURFACE HEAT FLUX AND TEMPERATURE-DEPENDENT THERMAL CONDUCTIVITY |
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| Authors: | David E Glass M Necati Ozisik W S Kim |
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| Affiliation: | 1. Analytical Services and Materials , Hampton, Virginia, 23666;2. Department of Mechanical and Aerospace Engineering , North Carolina State University , Raleigh, North Carolina, 27695 |
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| Abstract: | Abstract The hyperbolic Stefan problem with an applied surface heat flux and temperature-dependent thermal conductivity is solved numerically for a semi-infinite slab using Mac-Cormack's predictor-corrector method. Solutions are presented for cases where the melt temperature is both below and above the instantaneous jump in surface temperature at time t = O+. The interface condition, surface temperature, and internal temperatures are presented for different Stefan numbers and melt temperatures, as well as thermal conductivity both increasing and decreasing with temperature. The results obtained from the hyperbolic solution are compared with those obtained from the parabolic solution. |
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