Ghost fluid method for strong shock impacting on material interface

  • Authors:

  • T. G. Liu;B. C. Khoo;K. S. Yeo

  • Affiliations:

  • Institute of High Performance Computing #01-01 The Capricorn, Singapore Science Park II, Singapore 117528, Singapore;Department of Mechanical Engineering, National University of Singapore, Singapore 119260, Singapore and Singapore-MIT Alliance, 4 Engineering Drive 3, National University of Singapore, Singapore 1 ...;Department of Mechanical Engineering, National University of Singapore, Singapore 119260, Singapore

  • Venue:
  • Journal of Computational Physics
  • Year:
  • 2003

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Abstract

It is found that the original ghost fluid method (GFM) as put forth by Fedkiw et al. [J. Comp. Phys. 152 (1999) 457] does not work consistently and efficiently using isentropic fix when applied to a strong shock impacting on a material interface. In this work, the causes for such inapplicability of the original GFM are analysed and a modified GFM is proposed and developed for greater robustness and consistency. Numerical tests also show that the modified GFM has the property of reduced conservation error and is less problem-related.