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ISSN Druckformat: 0040-2508
ISSN Online: 1943-6009
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Modeling, Investigation and Optimization of 100 KW Coaxial Microwave Plasmatron Design
ABSTRAKT
Using computer-aided simulation, the influence of geometric dimensions of the coaxial microwave plasmatron on characteristics of the field in a discharge chamber has been investigated. The problem of matching of a rectangular waveguide feeding with large-size coaxial diameter plasmatron has been studied. New types of coaxial-to-waveguide junctions which have sufficiently broad transmission band and capable to operate with high power level have been proposed. It is demonstrated that the mode interference in the coaxial of the plasmatron might cause heterogeneity upon the angle of the field structure in discharge chamber. The methods for testing the field structure in the plasmatron discharge chamber with two-mode operation has been studied, and its effect on the characteristics of the discharge has been analyzed. Several types of optimized plasmatron structures presenting an interest for practical applications, including microwave-plasma burners for coal dust combustion are suggested.