In this paper, the authors present a set of computational simulations of the deflagration of composite propellants comprising octogen and hydroxyl-terminated polybutadiene. The focus of the investigation is on the parameter calibration of simplified global kinetics models used to determine gas-phase chemical rates. The calibration is based on a collection of experimentally measured burning characteristics for pseudopropellants comprising octogen and hydroxyl-terminated polybutadiene with different solid loadings and uses exclusively homogeneous, onedimensional, steady burning information. The task of including a large set of burning characteristics is accomplished by transforming the calibration into an optimization problem that is solved by means of a genetic algorithm. Models of increasing accuracy are constructed by enlarging the set of matched performance and the parameter space. The objective is to demonstrate the influence of the calibration of such models on three-dimensional simulations in which the size of the oxidizer particles is not neglected. A quantitative comparison of prediction and experiments is presented.
Numerical simulation of octogen-based propellant
Numerische Simulation Octogen-basierter Treibstoffe
AIAA Journal (online) ; 45 , 9 ; 2246-2258
2007
13 Seiten, 19 Bilder, 33 Quellen
Aufsatz (Zeitschrift)
Englisch
Numerical Simulation of Octogen-Based Propellant
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