String - The Two-phase Flow Of Parallel Airbags Projectile Trajectory Structure Mold

This paper presents a mixed one-dimension and two-phase flow mathematical model of gas projector, and describes the process with numerical simulation. The main points of the paper are as follows: (l)One dimension and two-phase flow model is found in combustion chamber, one dimension flow model is found in both high-pressure chamber and low-pressure chamber, zero dimension model in airbag. Adding with some constitute formulas which describe many factors, such as resistance between two-phase, heat exchange between two-phase, are used.(2)The physical models are solved by some of difference schemes, the routing of simulation is programmed with C-language. Comparison with test result, it indicates that two-phase flow mixed model is better than another two former models. (3) Influences of the original parameters on the process are analyzed.