RT Journal Article
ID 42bb2f9a2bec1796
A1 Miura, Hiroaki
A1 Matsuo, Akiko
A1 Nakamura, Yuichi
T1 MULTI-DIMENSIONAL SIMULATION ON IGNITION STAGE OF GRANULAR SOLID PROPELLANT VARYING PRIMER CONFIGURATION
JF International Journal of Energetic Materials and Chemical Propulsion
JO IJEMCP
YR 2008
FD 2008-12-01
VO 7
IS 6
SP 507
OP 522
AB The effects of primer configuration in the propellant chamber of the gun system utilizing granular solid propellant on the ignition performance (such as the formation of differential pressure between the breech pressure and the projectile base pressure) are numerically investigated. Simulations of experiments varying the primer length, the total area of flash holes and the igniter mass are carried out using the solid/gas two-phase fluid dynamics code for two-dimensional axisymmetric calculation of Eulerian gas flow and discrete solid propellant particles. The code simulates the igniter combustion in the primer, the movement of burning solid propellant grains, and the formation of pressure gradients in the chamber in the ignition process. The negative differential pressures between the breech and the rupture disk measured in the experiment are well predicted by the simulations for various primer conditions. In the process of igniting the solid propellant, the propellant grains are accelerated toward the rupture disk by the igniter gas flows from the primer and pressure gradients. From the simulated results, it is shown that the differential pressure is caused by the movement of solid propellant grains in the chamber depending on the primer conditions.
PB Begell House
LK https://www.dl.begellhouse.com/journals/17bbb47e377ce023,5ea7dc5d628861ae,42bb2f9a2bec1796.html