Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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STUDY ON NUMERICAL ANALYSIS AND TURBULENCE MODELS FOR ARC DISCHARGES IN HIGH-VOLTAGE INTERRUPTERS

초고압 차단부 아크방전 수치해석 및 난류모델에 관한 연구

  • 이종철 (강릉원주대학교 기계자동차공학부)
  • Received : 2010.04.26
  • Accepted : 2010.09.17
  • Published : 2010.09.30
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Abstract

In this study, we calculated arc discharges and flow characteristics driven by arcs in a thermal puffer chamber, which is one of most outstanding high-voltage interrupters, for understanding the complex physics and the probability of thermal breakdown. The four main parts of arc model for this virtual-reality are radiation, PTFE ablation, Cu evaporation, and turbulence. Among these important parts the turbulence model can be critical to the reliability of computation results during the whole arcing history because the plasma flow is affected by high heat energy and mass momentum. Two turbulence models, the Prandtl's mixing length model and the standard $k-\varepsilon$ model, are applied for these calculations and are compared with pressure-rise inside chamber and arc voltage between the contacts as well as flow characteristics near current zero.

Keywords

References

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