Energy output models for the ideal explosives and aluminized explosives were introduced. These models were used to calculate far-field UNDEX of TNT and PBXW-115 with AUTODYN software. Performance parameters such as peak pressure, time constant, impulse, energy flux density and shock wave energy were calculated. These parameters were compared with experimental data. The dynamic model of high pressure gas bubble in uncompressible liquid was achieved. The dynamic equations and JWL EOS (Equations of State) of the detonation products were both used to calculate bubble parameters. Bubble periods of 1 kg TNT and PBXW-115 are 0.213 s and 0.283 s. Bubble energy are 1.88 MJ·kg^-1 and 4.41 MJ·kg^-1, respectively. Bubble parameters calculated are consistent with experimental data.