Wenhua Liua,b, Mo Yangc,a,*, Yuwen Zhangb
, Guiliang Liua
, Liang Linga
, Xuchen Yinga,*
Frontiers in Heat and Mass Transfer, Vol.20, pp. 1-7, 2023, DOI:10.5098/hmt.20.15
Abstract In this study, numerical investigations are performed on a partially premixed flame of methane and air in two- and three-dimensional models. Nonlinear
method is adopted to illustrate the asymmetric phenomenon that affects the flame stability under various co-flow velocities. According to the results,
the mathematical relationship between the flame flickering frequency Stanton number and the dimensionless velocity Froude number has been
summarized as St=0.7Fr-0.46. The bifurcation phenomena under different Reynold numbers are found to have significant influence on the system
stability. Two critical bifurcation points, which is when Re=300 and Re=1200, are determined as the onset of breaking the flame… More >
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