Transietn local extinction and reignitional behavior of diffusion flames affected by flame curvature and preferential diffusion

摘要

Expeirmentla and numericla studied are made of transient H_2/N_2-air counterflow diffusion flames unsteadily strained by an impinging micro jet.Two-dimensional temerpature measruements by the lser rayleigh scattering method and numericla computations taking inot account detailed chemcial kinetis are conducted.paying attention to transient local extinction and reignition in rlation to the unsteadiness,flame curvatrue,and preferential diffusin effects.