Relationships between bifurcation and numerical analyses for ignition of hydrogen-air diffusion flames
Título de la tesis:
Relationships between bifurcation and numerical analyses for ignition of hydrogen-air diffusion flames
Autor/es:
Sánchez Pérez, Antonio Luis - Balakrishnan, G. - Liñán Martínez, Amable - Williams, F.A.
Tipo de documento:
Artículo
Universidad:
E.T.S.I. Aeronáuticos (UPM)
Departamento:
Motopropulsión y Termofluidodinámica
Idioma:
Inglés
Palabras clave:
hydrogen; nitrogen; oxygen; radical; air; article; chemical reaction kinetics; combustion; diffusion; fire; freezing; mathematical analysis; priority journal; temperature dependence
Fecha de la defensa:
Junio 1996-01-01
Notas:
Resumen: Linear bifurcation and numerical techniques are employed to determine critical conditions for ignition in steady, counterflow, nonpremixed hydrogen-air systems, with varying degrees of nitrogen dilution of the fuel, at temperatures larger than the crossover temperature associated with the second explosion limit for hydrogen. Analysis of profiles of the radical pool at ignition reveals that, irrespective of the degree of dilution of the fuel or oxidizer streams, the O-atom steady state fails on the oxidizer side of the mixing layer. Therefore, at least three overall steps, with O and H atoms as...
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