A High Accuracy/Low Computational Cost Explosion Simulator

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To develop a high accuracy/low computational cost explosion simulator, a leakage/diffusion module and a flame propagation module were developed and validated. The leakage/diffusion module considers the atomization and evaporation of a combustible liquid out of a raptured pipe and simulates the formation of a combustible vapor cloud. The flame propagation module considers the acceleration of flame due to hydrodynamic instability based on a fractal concept. Methods to easily determine the flame fractal dimension were also discussed.