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Acta Armamentarii ›› 2019, Vol. 40 ›› Issue (4): 769-776.doi: 10.3969/j.issn.1000-1093.2019.04.012

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Parallel Numerical Simulation on Three-dimensional Two-phase Flow of Interior Ballistic Trajectory

CHENG Cheng, ZHANG Xiaobing   

  1. (School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China)
  • Received:2018-08-23 Revised:2018-08-23 Online:2019-06-10

Abstract: A three-dimensional two-phase flow model based on arbitrary Lagrange-Euler method is established to improve the computational accuracy and cost of three-dimensional simulation for interior ballistic in guns. The three-dimensional governing equations are discretized with the MUSCL scheme. The fourth-order Runge-Kutta method is used to solve the time orientation. The numerical method is coded and compiled in the MPI parallel environment. The numerical simulation shows the detailed three-dimensional development of the two-phase flow behavior. The calculated results are in good agreement with the results in Ref.[20]. The effects of different igniter lengths and diameters on interior ballistic performance are analyzed. Parallel numerical studies show that the parallel efficiency can be reduced by about 50% using interior ballistic three-dimensional calculation of 24 processes. Key

Key words: interiorballistics, two-phaseflow, three-dimensionalnumericalsimulation, parallelcomputation

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