Thermodiffusion and vaporization of metal from levitated droplet IV. relations for experimental data analysis and their application for evaporation of iron |
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Authors: | Petr Kubíček Libor Mrázek |
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Institution: | (1) Na čtvrti 14, 705 Ostrava — Hrabůvka, Czech Republic;(2) State Bureau of Nuclear Safety, Syllabova 21, 703 00 Ostrava 3, Czech Republic |
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Abstract: | In the present paper the mathematical relations for analysing experimental results obtained at levitated droplet vaporization
were derived. The calculations resulted in a system of nonlinear equations where the unknown quantities characterize condensation
rate, thermodiffusion and their temperature dependences. The numerical solution was performed for vaporization of iron in
the flow of argon. The thermodiffusion and vapour condensation increase the vaporization rate 5.4-times at 2200 K. The thermodiffusion
ratio is negative in order 10−3 and its temperature dependence is important. The temperature dependence of vapour condensation was determined with the accuracy
of 2%, the rate constant of condensation was determined approximately as a consequence of experimental data inaccuracy.
Theory.
Numerical calculations. |
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Keywords: | |
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