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This work aims to numerically explore how shock waves interact with sinusoidal fuel-air interfaces, focusing on ignition modes and interface dynamics.

July 22, 2026Advances in AerodynamicsOpen Access

Interaction of shock wave with sinusoidal fuel-air interface

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Authors

JLJ LiuSouth China Agricultural University PYPengfei YangChinese Academy of Sciences WCWenjie ChengShihezi University

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Implication

Numerical investigation uncovers distinct ignition modes and interface behavior in fuel-air interactions, indicating complex hydrodynamics.

Key Points

This work aims to numerically explore how shock waves interact with sinusoidal fuel-air interfaces, focusing on ignition modes and interface dynamics.
Utilized an enhanced detonationFoam solver employing nine-species, twenty-one-step H2-O2 chemical mechanism.
Examined effects of shock strength, interface amplitude, and thickness on shocked interface evolution.
Identified ignition behaviors across various Mach numbers (2.0 and 2.7).
Weak ignition at Ma = 2.0 shows localized ignition at spike and bubble tips, while strong ignition at Ma = 2.7 results in rapid ignition across the interface.
Dimensional amplitude evolution for large-amplitude interfaces converges onto a single curve, indicating dominance of hydrodynamic effects.
Interface thickening has regime-dependent effects, with thickening advancing ignition in weak-ignition but delaying it in strong-ignition conditions.

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Liu et al. (2026) studied this question.

synapsesocial.com/papers/6a605dfa4163e025518d7e73 https://doi.org/10.1186/s42774-026-00266-3

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Implication

Numerical investigation uncovers distinct ignition modes and interface behavior in fuel-air interactions, indicating complex hydrodynamics.

Interaction of shock wave with sinusoidal fuel-air interface

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Implication

Key Points

Cite This Study

Interaction of shock wave with sinusoidal fuel-air interface

Discussion

Member takes

Implication

Key Points

Cite This Study

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