Investigation of Small-Caliber Primer Function Using a Multiphase Computational Model

Report No. ARL-TR-4514
Authors: John R. Schmidt and Michael J. Nusca
Date/Pages: July 2008; 36 pages
Abstract: This report describes further development in the formulation of a primer model that is compatible with the ARL-NGEN3 code and small-caliber weapons that takes in account multidimensional, multiphase interior ballistics codes, which employ coupled Eulerian-Lagrangian schemes to explicitly treat both the gas and solid phase. The model is based on the One Dimensional Turbulence modeling approach that has recently emerged as a powerful tool in multiphase simulations. Initial results are shown for the model run as a stand-alone code and are compared to recent experiments with small-caliber primers. Integration of the primer model with the Armys ARL-NSRG computational fluid dynamics code is presented and the results are compared to experiments with small-caliber primers fired into empty test chambers. It is proposed that this further progress sets the stage for coupling the primer model to the ARL-NGEN3 code.
Distribution: Approved for public release
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Last Update / Reviewed: July 1, 2008