Experiment and Simulation Study on Constant Volume Stage of Central Explosion-tube Type Dispersion of Cluster Bomb

Abstract

In order to study the variation of flow field with time and space under the central point fire spreading mode of central explosion-tube type dispersion of cluster bomb, the experimental study of the constant volume stage of central explosion-tube type dispersion was carried out. The two-dimensional axisymmetric two-phase flow model in ignition tube and central tube was established, and the mesh generation was carried out for dispersion system. The two-dimensional CE/SE numerical algorithm was used to write the interior ballistic program. The simulation results were compared with the experimental results, and the pressure distribution characteristics and velocity change characteristics of flow field were analyzed. The effectiveness of the mathematical model was proved. The results show that the two-dimensional two-phase flow model can make the calculation results of ignition process more comprehensive than the one-dimensional model, and it is more accurate to study the two-phase flow field characteristics of ignition tube and central tube with time and space by the model. The study results offer reference for the study on the action principle of the constant volume stage of central explosion tube type dispersion.