| Authors | حدیثه کریمایی,مجید سبز پوشانی |
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| Journal | International Journal of Energetic Materials and Chemical Propulsion |
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| Page number | 25 |
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| Volume number | 24 |
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| IF | 0.8 |
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| Paper Type | Full Paper |
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| Published At | 2025-10-22 |
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| Journal Grade | Scientific - research |
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| Journal Type | Electronic |
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| Journal Country | Iran, Islamic Republic Of |
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| Journal Index | ISI-Listed ,SCOPUS |
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| Keywords | detonation stability, activation energy, chemical kinetics, detonation failure, nonideal detonation |
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Abstract
This study investigates the behavior of a detonation wave in a non-ideal environment, where deviations
from ideal conditions arise due to external influences such as friction. The detonation is simulated
using the one-dimensional Euler equations with a momentum source term representing frictional
effects. A single-step Arrhenius law is employed to model chemical kinetics. The governing equations
are solved using the piecewise parabolic method, while the shock front conservative tracking algorithm
is applied to achieve adaptive mesh refinement at the detonation front. A parametric study is conducted
to evaluate the influence of friction on detonation dynamics in mixtures characterized by low activation
energy, specifically below the critical stability threshold of 22 required for sustaining a completely
regular detonation structure. The failure mechanism of the detonation wave is shown to depend on the
activation energy level. Results indicate that detonation failure is primarily driven by a reduction in
pressure and chemical reaction rate, with negligible influence from the unburnt packet mechanism,
regardless of the activation energy. Across all tested activation energy levels, detonation failure occurs
when friction exceeds a critical threshold, independent of the specific mixture composition.
