Publication de 18 numéros par an
ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561
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Stabilization of Combustion of a Lean Mixture by a Coaxial Twisting Flow
RÉSUMÉ
Mixing in a tube of one-way twisted turbulent flows coming from two coaxial tubes is analyzed. The process of stabilization of combustion of a lean mixture by a small amount of rich-mixture combustion products was calculated numerically by a simple phenomenological combustion model. It is shown that flow twisting is an effective method for increasing the combustion efficiency; however, this can result in appearance of the region of flow instability with generation of a hysteresis loop. Optimal values of the governing parameters at which the flow mode is unique and the fuel is completely burnt at a distance of two gauges from the beginning of mixing have been found.