Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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COMPUTATIONAL MODELING AND SIMULATION OF METAL PLASMA GENERATION BETWEEN CYLINDRICAL ELECTRODES USING PULSED POWER

펄스파워를 이용한 실린더형 전극간 금속 플라즈마 생성현상의 전산유동해석

  • Kim, K. (Department of Mechanical System Engineering, Kumoh National Institute of Technology) ;
  • Kwak, H.S. (Department of Mechanical System Engineering, Kumoh National Institute of Technology) ;
  • Park, J.Y. (Department of Mechatronics, Kumoh National Institute of Technology)
  • 김경진 (금오공과대학교 기계시스템공학과) ;
  • 곽호상 (금오공과대학교 기계시스템공학과) ;
  • 박중윤 (금오공과대학교 기전공학과)
  • Received : 2014.11.18
  • Accepted : 2014.12.15
  • Published : 2014.12.31
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Abstract

This computational study features the transient compressible and inviscid flow analysis on a metallic plasma discharge from the opposing composite electrodes which is subjected to pulsed electric power. The computations have been performed using the flux corrected transport algorithm on the axisymmetric two-dimensional domain of electrode gap and outer space along with the calculation of plasma compositions and thermophysical properties such as plasma electrical conductivity. The mass ablation from aluminum electrode surfaces are modeled with radiative flux from plasma column experiencing intense Joule heating. The computational results shows the highly ionized and highly under-expanded supersonic plasma discharge with strong shock structure of Mach disk and blast wave propagation, which is very similar to muzzle blast or axial plasma jet flows. Also, the geometrical effects of composite electrodes are investigated to compare the amount of mass ablation and penetration depth of plasma discharge.

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References

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