An Investigation of Aluminum Dust Explosions

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Abstract
A mathematical model is presented in this paper which can be used as the theoretical foundation of a new method for interpreting flame propagation data in a multiphase system. In this method the global kinetic parameters are estimated by comparing computed pressure histories with those obtained experi- mentally. The model is essentially a homogeneous multiphase transport model for turbulent dust explo- sions. The turbulent transport is modeled employing an eddy diffusivity correlation for confined turbulent premixed gaseous flames. The performance of the mathematical model is compared with the experimental data of an aluminum dust explosion conducted in a twenty-liter sphere with central ignition. Parametric sensitivity of the model is briefly discussed and model limitations are identified.