Performance Analysis of Internal Ballistic Multiphase Flow of Composite Charge Structure

Shenshen Cheng (), Kun Jiang (), Shao Xue, Ruyi Tao and Xinggan Lu
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Shenshen Cheng: School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Kun Jiang: School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Shao Xue: School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Ruyi Tao: School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Xinggan Lu: School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

Energies, 2023, vol. 16, issue 5, 1-15

Abstract: Different charge structures have different interior ballistic performance. Existing research is based on experimental measurements or the lumped parameter method to obtain limited ballistic characteristics, which indirectly impacts the analysis of the parameters’ distribution, requiring a complex modeling solution process. Besides this, the ignition performance of different charge structures needs to be further explored. The disadvantages of previous studies have limited the feasibility of further optimization of the composite charge structure. In this paper, we apply a two-dimensional two-phase flow method based on the Eulerian–Lagrangian model to study the performance of different composite charge structures. First, we establish the mathematical model of different particle types based on interior ballistics, which is directly related to the research foundation of subsequent ballistic performance. Next, we investigate the multi-scale reaction flow of complex charge structures by the two-phase flow method and obtain the distribution of parameters in the chamber. Finally, we conduct a study with different particle charge parameters to explore the sensitivity of ballistic characteristics to structural parameters. The results show that the tubular propellant has good ignition performance in different charge structures, and the ignition consistency can be improved by charging tubular propellant in the center of the chamber. However, more tubular propellants are ineffective at significantly improving ignition performance, and result in a decrease in combustion chamber pressure. These results may be promising for the optimization of various charge structures.

Keywords: charge structure; two-phase flow; numerical simulation; interior ballistic (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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