Numerical Predictions for Ignition of a Confined Reactive Gas
ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
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Ignition of a reactive gas in a closed chamber is investigated by numerically solving the one-dimensional, compressible Navier-Stokes Equations for a multi-species reacting flow. The full momentum equation is retained in order to model the influence of the finite-size chamber. Ignition is studied on a gono-go basis when the external heat flux is interrupted. The results for a simple premixed reaction show a complex interaction with the acoustic modes, a hang-fire ignition separating gono-go, and the possibility of a shock wave once ignition occurs. Dependence of ignition time on external heat flux, activation energy, and other kinetic parameters is described.
- Numerical Mathematics
- Ammunition and Explosives
- Combustion and Ignition