The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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Study on the Flow and Mass Transfer in a PASB Arc Plasma Chamber

PASB 아크 플라즈마 챔버에서 발생하는 유동 및 물질전달에 관한 연구

  • 이종철 (강릉대학교 기계자동차공학부) ;
  • 김윤제 (성균관대학교 기계자동차공학부)
  • Published : 2008.08.01
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Abstract

The computational investigation is performed to find out the interaction of arc plasmas with surrounding materials and the thermal flow characteristics in a PASB (Puffer-Assisted Self-Blast) chamber, which is one of new breaking concepts in $SF_6$ switchgears. It is very important to define the flow and mass transfer happened during the full arcing history for further understanding complex physics inside the chamber. In this study, we have considered two diffusion processes by the hot arc plasma, one is PTFE nozzle ablation and the other is Cu electrode evaporation, simultaneously. It was found that the principle of the pressure-rise inside the chamber is confirmed by the computational results and the increase of the electrical conductivity of the residual gas near current zero is critical to the chamber design.

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References

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