Triple flame structure and diffusion flame stabilization

Veynante, D.; Vervisch, L.; Poinsot, T.; Liñán Martínez, Amable y Ruetsch, G. (1995). Triple flame structure and diffusion flame stabilization. En: "Studying Turbulence Using Numerical Simulation Databases - V, Proceedings of the 1994 Summer Program", Dec 1994, Stanford University, Stanford.

Descripción

Título: Triple flame structure and diffusion flame stabilization
Autor/es:
  • Veynante, D.
  • Vervisch, L.
  • Poinsot, T.
  • Liñán Martínez, Amable
  • Ruetsch, G.
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: Studying Turbulence Using Numerical Simulation Databases - V, Proceedings of the 1994 Summer Program
Fechas del Evento: Dec 1994
Lugar del Evento: Stanford University, Stanford
Título del Libro: Studying turbulence using numerical simulation databases. V : proceedings of the 1994 summer program
Fecha: 1995
Materias:
Escuela: E.T.S.I. Aeronáuticos (UPM) [antigua denominación]
Departamento: Motopropulsión y Termofluidodinámica [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The stabilization of diffusion ñames is studied using asymptotic techniques and numerical tools. The configuration studied corresponda to parallel streams of cold oxidizer and fuel initially separated by a splitter píate. It is shown that stabilization of a diffusion flame may only occur in this situation by two processes. First, the flame may be stabilized behind the flame holder in the wake of the splitter píate. For this case, numerical simulations confirm scalings previously predicted by asymptotic analysis. Second, the flame may be lifted. In this case a triple flame is found at longer distanees downstream of the flame holder. The structure and propagation speed of this flame are studied by using an actively controlled numerical technique in which the triple flame is tracked in its own reference frame. It is then possible to investigate the triple flame structure and velocity. It is shown, as suggested from asymptotic analysis, that heat reléase may induce displacement speeds of the triple flame larger than the laminar flame speed corresponding to the stoichiometric conditions prevailing in the mixture approaching the triple flame. In addition to studying the characteristics of triple flames in a uniform flow, their re-sistance to turbulence is investigated by subjecting triple flames to different vortical configurations.

Más información

ID de Registro: 1537
Identificador DC: http://oa.upm.es/1537/
Identificador OAI: oai:oa.upm.es:1537
Depositado por: Biblioteca ETSI Aeronauticos
Depositado el: 18 Abr 2009
Ultima Modificación: 20 Abr 2016 06:52
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