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March 8, 2026International Journal of Hydrogen EnergyOpen Access

Spherical turbulent flame propagation limits of ammonia–hydrogen–oxygen–nitrogen pre-mixtures by intense near-isotropic turbulence in a constant volume vessel

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Authors

YXYu XiaXLXin LiuNHNozomu Hashimoto

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Overview

Randomized trial investigates flame propagation limits in ammonia-hydrogen mixtures, suggesting improved combustion stability.

Key Points

  • This study aims to understand the turbulent flame propagation limits of ammonia-hydrogen mixtures under turbulent conditions.
  • Experiments conducted in a fan-stirred constant-volume chamber.
  • Investigated ammonia-hydrogen-oxygen-nitrogen mixtures with varying hydrogen mole fractions and equivalence ratios.
  • Constructed turbulent flame propagation probability maps.
  • Turbulent flame limits expand with higher hydrogen content in the fuel mixture.
  • Maximum turbulence intensity observed at an equivalence ratio of 0.9 with a significant increase in flame propagation limits.
  • Lean ammonia-hydrogen flames can sustain higher turbulent Karlovitz numbers than pure ammonia flames.

Cite This Study

Xia et al. (2026) studied this question.

synapsesocial.com/papers/69ad122be7e9681137aa88achttps://doi.org/10.1016/j.ijhydene.2026.154130
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