Evaluation of various theoretical equations of state used in calculation of detonation properties
1998
The thermodynamic properties of detonation products are computed by allowing for the presence of several phases of gases and solids in chemical equilibrium. We briefly describe the main perturbation theories found in the literature and we discuss their reliability in including consideration of the adiabatic gamma. We also consider an equation of state of carbon in detonation products which allows a smooth transition from an effective graphite phase to an effective diamond phase. We extensively compare the most reliable calculated results with measured detonation properties of explosives made up of carbon, hydrogen, oxygen, and nitrogen (detonation velocity, kinetic energy transferred in a cylinder test, overdriven detonation, and Chapman–Jouguet pressure). Several subjects for further study of a priori calculation of detonation properties are indicated.
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