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March 14, 2026Advanced Powder TechnologyOpen Access

Spherical flame propagation Behaviors in Iron-Methane-Air mixtures

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Authors

AUAkihiro UedaGYGuanwen YinTJTomoyuki Johzaki

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Overview

Experimental investigation of flame propagation behaviors in hybrid iron-methane-air mixtures, highlighting gas-solid interactions.

Key Points

  • The study aims to understand the flame propagation behaviors in iron-methane-air mixtures under different methane equivalence ratios.
  • Conducted combustion tests in a 4.2 L closed chamber.
  • Used a schlieren visualization system and high-speed camera for observation.
  • Measured flame radius and propagation speed of hybrid mixtures versus pure methane-air flames.
  • Flame speed decreased near stoichiometric methane conditions due to iron particle heat loss.
  • Under lean methane conditions, flame speed exceeded that of methane-air flames, indicating additional heat from iron.
  • Formation of Fe2O3 and FeO/Fe3O4 was confirmed through XRD analysis.

Cite This Study

Ueda et al. (2026) studied this question.

synapsesocial.com/papers/69b4fc1fb39f7826a300cbf4https://doi.org/10.1016/j.apt.2026.105217
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