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  • 1
    Electronic Resource
    Electronic Resource
    Modeling of RF plasma torch with a metallic tube inserted for reactant injection (1991)
    Springer
    Plasma chemistry and plasma processing 11 (1991), S. 103-128 
    Details
    ISSN: 1572-8986
    Keywords: RF plasma torch ; injection probe ; modeling
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
    Notes: Abstract Flow, temperature, and electromagnetic (EM) fields in a radio-frequency thermal plasma torch designed for the preparation of superconducting powders or films have been analysed by using a new two-dimensional modeling approach with the electric field intensity as the fundamental EM field variable. The insertion of a stainless steel injection tube into the torch leads to large induction currents in this tube. Although such large induction currents cause pronounced changes of the EM fields near the injection tube, flow and temperature fields are little affected. There exists only one large toroidal vortex in the upper part of the present torch, while the maximum temperature appears at an off-axis location within the coil region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01447036
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Modeling of a counterflow plasma reactor (1991)
    Springer
    Plasma chemistry and plasma processing 11 (1991), S. 229-249 
    Details
    ISSN: 1572-8986
    Keywords: Thermal plasma reactor ; counterflow ; modeling
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
    Notes: Abstract Modeling of a counterflow plasma reactor is presented, using liquid injection for the synthesis of fine particles. An experimental reactor has been developed in this laboratory, and feasibility has been demonstrated for synthesizing advanced ceramic powders. The flow field calculations show two major recirculating regions which are of importance for increasing the particles' residence time inside of the reactor. In addition, the temperature within these recirculation zones remains relatively uniform. For simulation, water droplet trajectories have been calculated for droplets produced by an injection probe. It is shown that the droplets in a size range below 50 μm in diameter will follow the streamlines and evaporate completely within a short traveling distance. This finding suggests that this reactor configuration provides a favorable environment for the synthesis of fine particles using liquid precursors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01447244
    Location Call Number Limitation Availability
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    Paper (German National Licenses)
    Fulltext
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