Multiphase CFD Simulation of Solid Propellant Combustion in a Small Gun Chamber

Table 2

Comparison of interior ballistic performance for charge weight of 0.245 g.

	Computed values (present code)				Lumped-parameter code; (STANAG 4367)	Firing data test [28]
	No friction		With friction
	Value	Error (%)	Value	Error (%)
Maximum average chamber pressure (MPa)	207.82		227.49		175.3
Maximum average breech pressure (MPa)	208.84		228.89		176.1
Maximum average mouth case pressure (MPa)	207.31	−10.64	226.56	−2.34		232
Maximum average shot base pressure (MPa)	206.44		225.49		173.7
Shot muzzle velocity (m/s)	366.9	11.18	332.72	0.82	310.92	330
Shot exit time (ms)	0.776		0.802		0.788	<1