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Calculating the Quasi-Static Pressures of Confined Explosions Considering Chemical Reactions under the Constant Entropy Assumption

On the basis of the energy conservation and the state equation of the ideal gas, a formula of quasi-static pressures of the confined explosions calculating was derived under the constant entropy assumption of the detonation products expansion and the constant volume assumption of the chemical reactions. Taking the TNT explosive as an example, the quasi-static pressures of the confined explosion either considering the influence of the chemical reactions or not were calculated and the quasi-static pressures of the confined space were obtained