Abstract
We introduce a new method to investigate linear stability of gaseous detonations that is based on an accurate shock-fitting numerical integration of the linearized reactive Euler equations with a subsequent analysis of the computed solution via the dynamic mode decomposition. The method is applied to the detonation models based on both the standard one-step Arrhenius kinetics and two-step exothermic-endothermic reaction kinetics. Stability spectra for all cases are computed and analyzed. The new approach is shown to be a viable alternative to the traditional normal-mode analysis used in detonation theory.
Original language | English (US) |
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Pages (from-to) | 036103 |
Journal | Physics of Fluids |
Volume | 30 |
Issue number | 3 |
DOIs | |
State | Published - Mar 20 2018 |