Models of the time-averaged heat release rate of the two-dimensional laminar premixed slit flame subjected to the transverse disturbance

Liu, Tengyu; Yang, Lijun; Li-zi, Qin; Jiang, Xiaozhen; Li, Jingxuan

doi:10.1016/j.ast.2022.108072

Cited by 5 publications

(1 citation statement)

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“…The stable flame, transient oscillating flame, extinction, flame with repetitive extinction and ignition, and quenching were analyzed experimentally. Liu et al [17] conducted a study on the dynamic behavior and stability of a slit flame through a model of fluid perturbation. The flame aspect ratio significantly affected the time-averaged slit flame front surface area, while the mean flow velocity played an important role in the response of the slit flame heat release rate to transverse disturbance.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Hydrogen-Methane Flame in Different Header Types of Premixed Combustors

Kim,

Lee,

Son

et al. 2024

Preprint

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This study investigates the impact of thin flame combustor design on hydrogen flame characteristics and combustion performance through numerical simulations. Variations in flame shape and combustibility between 100% methane and 100% hydrogen combustion are analyzed. Three combustor header shapes (flat, concave, and convex) are modeled to assess their influence on flame behavior. Results show distinct flow patterns, with concave headers promoting strong central flows and convex headers dispersing the flow outward. Temperature field analysis indicates that hydrogen flames have higher temperatures and shorter quenching distances compared to methane flames. A comparative analysis of combustion products is conducted to evaluate combustion performance and NOx emissions. Consequently, the concave header has high combustibility and increases temperatures and NOx fraction in hydrogen combustion.

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Section: Introductionmentioning

confidence: 99%