Particle heating in a thermal plasma

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Abstract
Pome aspects of the recent progress in plasma-particle heat transfer study are reviewed with emphasis on heat transfer mechanisms, effects of the Knudsen number on the heat transfer and some other com- plicated factors related to the plasma-particle heat transfer. Although conduction/convection is the main heat transfer mechanism, sometimes one has to consider many other mechanisms and complicated factors such as radiation, ion-electron recombination at the particle surface, the Knudsen effect, particle evaporation, plasma-particle interactions, etc. Heat transfer expressions for different heat transfer regimes from continuum to FXF are proposed and compared with corresponding experimental data. It is indicated that more carefulexperimental studies are needed to clarify the effects of non-LTE and other complicated factors and to check the available heat transfer correlations for the case of small particle sizes.

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