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Numerical Simulation of the Temperature Field in the Vacuum Vessel Preparing Nanopowder by DC Arc Method

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Heat transfer analysis of an equipment homemade to prepare nanopowder by DC arc method was carried out. Energy of the DC arc was simplified to subsection temperature load and radiative heat flow. The temperature field in the vacuum vessel and on the electrodes were simulated by the ANSYS software. It is shown that the high temperature from the DC arc can melt any metal quickly to evaporate; the water cooling structure which is rational designed, can prevent wrong melting of other parts, and mixing impurity into the nanopowder. The temperature in the vacuum vessel decreases with a big grads from the arc center to far. The inwall of the collecting room is on a symmetrical low temperature region with a temperature of nearly 17 °C, which provides a favorable surrounding for the condensing and forming of the nanopowder. Simulation of the temperature field in the vacuum vessel is valuable for the designing of preparation equipment, and the optimizing of preparation process.
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Keywords: DC ARC METHOD; NANOPOWDER; TEMPERATURE FIELD; VACUUM VESSEL

Document Type: Research Article

Publication date: 2009-01-01

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  • Journal of Computational and Theoretical Nanoscience is an international peer-reviewed journal with a wide-ranging coverage, consolidates research activities in all aspects of computational and theoretical nanoscience into a single reference source. This journal offers scientists and engineers peer-reviewed research papers in all aspects of computational and theoretical nanoscience and nanotechnology in chemistry, physics, materials science, engineering and biology to publish original full papers and timely state-of-the-art reviews and short communications encompassing the fundamental and applied research.
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