TY  - JOUR
AU  - Chen, Ziyin
AU  - Mai, Yuxi
PY  - 2026
DA  - 2026/05/12
TI  - Numerical Study of Premixed Hydrogen/Air Flame-Wall Interaction for Confined Systems
JO  - Journal of Carbon Neutrality
T2  - Journal of Carbon Neutrality
JF  - Journal of Carbon Neutrality
VL  - 1
IS  - 1
SP  - 29
EP  - 37
DO  - 10.62762/JCN.2026.937655
UR  - https://www.icck.org/article/abs/JCN.2026.937655
KW  - hydrogen combustion
KW  - flame-wall interaction
KW  - confined flames
KW  - wall heat losses
KW  - numerical modeling
AB  - Accurate modeling of flame-wall interaction is essential for predicting premixed hydrogen combustion in confined configurations relevant to hydrogen-based energy systems. Detailed chemical mechanisms often produce unphysical near-wall heat release due to persistent radical-consuming reactions at low temperatures, reducing simulation fidelity and limiting predictive capability. To address this, we apply an H radical recombination model that selectively removes H radicals at the wall through recombination to $\ce{H2}$ while conserving mass. The model is validated using canonical flame-wall interaction scenarios, including head-on quenching of stoichiometric hydrogen/oxygen flames and side-wall quenching of premixed hydrogen/air flames. One- and two-dimensional simulations evaluate flame propagation, quenching, and stability with isothermal walls. Results show that H radicals dominate abnormal near-wall heat release, and selective recombination effectively suppresses this behavior. In side-wall quenching, the model reproduces experimental flame propagation speed accurately. For wider channels, wall heat losses destabilize asymmetric flames and promote symmetric configurations, consistent with experiments. This H radical recombination model provides a physically consistent and computationally efficient strategy for capturing flame-wall interactions and heat losses in premixed hydrogen flames. By improving near-wall prediction fidelity in confined configurations, it supports more reliable simulations of hydrogen combustion systems, advancing the development of safe and efficient carbon-neutral energy technologies.
SN  - pending
PB  - Institute of Central Computation and Knowledge
LA  - English
ER  - 

@article{Chen2026Numerical,
  author = {Ziyin Chen and Yuxi Mai},
  title = {Numerical Study of Premixed Hydrogen/Air Flame-Wall Interaction for Confined Systems},
  journal = {Journal of Carbon Neutrality},
  year = {2026},
  volume = {1},
  number = {1},
  pages = {29-37},
  doi = {10.62762/JCN.2026.937655},
  url = {https://www.icck.org/article/abs/JCN.2026.937655},
  abstract = {Accurate modeling of flame-wall interaction is essential for predicting premixed hydrogen combustion in confined configurations relevant to hydrogen-based energy systems. Detailed chemical mechanisms often produce unphysical near-wall heat release due to persistent radical-consuming reactions at low temperatures, reducing simulation fidelity and limiting predictive capability. To address this, we apply an H radical recombination model that selectively removes H radicals at the wall through recombination to \$\ce{H2}\$ while conserving mass. The model is validated using canonical flame-wall interaction scenarios, including head-on quenching of stoichiometric hydrogen/oxygen flames and side-wall quenching of premixed hydrogen/air flames. One- and two-dimensional simulations evaluate flame propagation, quenching, and stability with isothermal walls. Results show that H radicals dominate abnormal near-wall heat release, and selective recombination effectively suppresses this behavior. In side-wall quenching, the model reproduces experimental flame propagation speed accurately. For wider channels, wall heat losses destabilize asymmetric flames and promote symmetric configurations, consistent with experiments. This H radical recombination model provides a physically consistent and computationally efficient strategy for capturing flame-wall interactions and heat losses in premixed hydrogen flames. By improving near-wall prediction fidelity in confined configurations, it supports more reliable simulations of hydrogen combustion systems, advancing the development of safe and efficient carbon-neutral energy technologies.},
  keywords = {hydrogen combustion, flame-wall interaction, confined flames, wall heat losses, numerical modeling},
  issn = {pending},
  publisher = {Institute of Central Computation and Knowledge}
}