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Chinese Journal of High Pressure Physics  > 2013  >  27(4): 542-548.
LI Jian-Qiao, SONG Wei-Dong, NING Jian-Guo. A Study on Characteristics of Plasma Generated by Hypervelocity Impact[J]. Chinese Journal of High Pressure Physics, 2013, 27(4): 542-548. doi: 10.11858/gywlxb.2013.04.012
Citation: LI Jian-Qiao, SONG Wei-Dong, NING Jian-Guo. A Study on Characteristics of Plasma Generated by Hypervelocity Impact[J]. Chinese Journal of High Pressure Physics, 2013, 27(4): 542-548. doi: 10.11858/gywlxb.2013.04.012
shu

A Study on Characteristics of Plasma Generated by Hypervelocity Impact

doi: 10.11858/gywlxb.2013.04.012

  • State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

  • Received Date: 08 Nov 2011
  • Rev Recd Date: 22 Dec 2011
  • Publish Date: 15 Aug 2013
    Abstract
  • The characteristics of the plasma generated by hypervelocity impact have been studied by theoretical analysis and numerical simulation. Based on the theory of thermodynamics and statistical physics, a model of thermal ionization is proposed to describe the relationship between the degree of ionization and temperature. Plasma conductivity related to temperature is obtained by considering the velocity distribution law at heat balance. Three-dimensional model of an aluminum plate impacted by a spherical projectile with 6.0 km/s at an angle of 60 is established, and the corresponding simulation is performed. Then the parameters of the physical model are obtained, and the characteristics of plasma generated by hypervelocity impact are analyzed. There is a good agreement between the model predictions and the experiment results, which indicates that the model is effective and reasonable for analyzing the characteristics of plasma.

     

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