Establishment and Simulation of Two-dimensional Interior Ballistics Model of Large Caliber Davis Gun Considering the Axial  Movement of Tubular Charge Clusters

doi:10.3969/j.issn.1000-1093.2016.10.022

Abstract

Abstract: Considering that the length of the tubular charge for the large caliber high speed Davis gun is long, the traditional pseudo-fluid hypothesis in two-phase flow model may cause errors. In order to solve this problem, Eulerian coordinate system is used to settle the gas field, and the Lagrangian coordinate system is used to settle the solid field. It is assumed that the tubular charge clusters are linearly configured along radial direction, these clusters move along axial direction，and gas moves along radial and axial directions. Based on this assumption, a two-dimensional interior ballistics model is established for a 480 mm Davis gun with tubular modular charge. Then through the comparison of the simulated and experimental results, the proposed model is verified to be effective. The distribution of gas pressure along two directions and the movement rules of tubular charge clusters along axial direction were obtained by further analysis of the simulated results.

Key words: ordnance science and technology, Davis gun, interior ballistics, two-phase flow, numerical simulation

CLC Number:

TJ012.1.1⁺1

JIANG Shu-yuan, WANG Hao, LIN Chang-jin, WANG Jin-long. Establishment and Simulation of Two-dimensional Interior Ballistics Model of Large Caliber Davis Gun Considering the Axial Movement of Tubular Charge Clusters[J]. Acta Armamentarii, 2016, 37(10): 1941-1948.

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Establishment and Simulation of Two-dimensional Interior Ballistics Model of Large Caliber Davis Gun Considering the Axial Movement of Tubular Charge Clusters

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