Research on the cooling performance of gas generators by porous wire mesh

Abstract

The gas bladder is essential to the submunition delivery system, performing high-temperature and high-pressure gas scouring and ablation. In this paper, a new gas generator device containing wire mesh is designed to prevent ablation and breakage of the gas bladder. To verify the cooling effect of the device, simulation software is used to simulate the gas flow process and the gas cooling effect of the gas generator. The comparison with the experimental results shows that the error of the calculation results is small and the simulation model is accurate and reliable. Based on the method mentioned earlier, simulations were conducted for different wire porosities and filling thicknesses. The results showed that the cooling effect of the gas generator increased and then decreased with the thickness of the wire mesh and the cooling performance of the wire mesh was the best when the filling thickness was 10 mm. When the filling thickness is 10 mm, the temperature drop and the pressure drop decrease with increasing wire porosity.