고 에너지 물질의 에너지 방출 성능 모델링 및 해석을 위한 수학적 연구

Abstract

Modeling the energy release performance of energetic materials combustion in closed system is of fundamental importance for aerospace and defense application. However, because the complex unsteady heat transfer occurs when the energetic material combusting, it is difficult to theoretically predict the combustion performance. Here, we suggest a theoretical model to estimate the energy release performance of a single energetic material based on the energy balance equation and the one-dimensional unsteady heat transfer with lumped system analysis. Based on the law of energy conservation or the Dalton’s law of partial pressure, the perspective of suggested model for a single energetic material is expanded to mixed energetic materials. The energy release performance of the mixed energetic materials is calculated by adding the energy release performance of each material without the time delay of the chain combustion. To validate the model, the model predictions for single and mixed energetic materials are compared with the experimental results, according to the amount and type of energetic materials. As a result of the comparison, a slight differences in maximum pressure are demonstrated, and the reliability of the model is validated. To confirm the independent effects of parameters on the model, and to gain insight of the combustion characteristics of the energetic material, parametric analysis for reaction temperature and characteristic time scale of energy generation and loss is studied. This results will be able to predict the energy release performance of the energetic material before the experiment using the characteristics of energetic materials and bombs. Finally, we hope that the suggested model could predict the energy release performance of single or mixed energetic material for various types of materials, as well as the energetic materials used for validation.