Numerical simulation of the two-phase flow interior ballistics of the coated-propellant charge with low temperature sensitivity

The ignition process and combustion process in bore of coated-propellant charge with low temperature sensitivity were analyzed. The two-phase fluid model of the complicated charge structure which contains main charge, coated-propellant charge, tail tube propellant, combustible case and central spread tube was established, and a computer program was written. As an example, a computation of a lined gun was carried out. The results show that the calculated values conform to the experimental values.