Abstract
Detonation is a high-speed combustion phenomenon in which shock waves and chemical reaction waves interact, leading to rapid temperature and pressure increases that drive chemical reactions. Stability in detonation propagation is highly sensitive to the equivalence ratio (Φ) and the initial droplet size distribution, both of which significantly impact energy release and combustion efficiency. This study investigates two-phase detonation behavior using a two-dimensional Eulerian-Eulerian model under high-temperature and high-pressure ignition conditions. The effects of varying equivalence ratios and liquid fuel droplet distributions on detonation wave propagation were analyzed. The results indicate that wider droplet size distributions improve detonation stability by reducing fluctuations associated with incomplete combustion and droplet fractionation. These findings provide insights into optimizing fuel injection strategies for advanced propulsion systems, including rotating detonation engines, where stable and efficient wave propagation is essential.
