1. Curvilinear deflagration of energetic materials.
- Author
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Kuznetsov, Igor R. and Stewart, D. Scott
- Subjects
- *
GAS-solid interfaces , *CURVATURE , *INTERFACES (Physical sciences) , *SURFACES (Physics) , *CRYSTALLINE interfaces , *NUMERICAL analysis - Abstract
The effects of material interface curvature on deflagration of a homogeneous solid energetic material (EM) is studied in a limit when the radius of curvature is much larger than the deflagration front thickness. Under the assumption of quasi-steady burning, a method of matched asymptotics is employed do derive first-order curvature corrections to the mass flux across the gas-solid interface as well as to the interface temperature. As an illustration, a problem of quasi-steady spherical particle deflagration is solved numerically and the simulation results are used to verify those obtained through asymptotic analysis. An algorithm for a fully-coupled unsteady solver suitable for EM deflagration simulation is presented. Numerical solution of the unsteady spherical particle deflagration is used to show that the assumption of quasi-steady deflagration is valid. [ABSTRACT FROM AUTHOR]
- Published
- 2007
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