Flame propagation along a vortex axis

書誌事項

公開日
2002-01
権利情報
  • https://www.elsevier.com/tdm/userlicense/1.0/
DOI
  • 10.1016/s0360-1285(02)00019-9
公開者
Elsevier BV

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説明

Abstract The propagating flame along a vortex axis is completely different from the ‘normal’ flames, which propagate in a tube or expand spherically from an ignition point. Its propagating speed is nearly equal to the maximum tangential velocity in the vortex. Thus, the flame propagation is governed not by a physico-chemical parameter, S u (the laminar burning velocity) but by an aerodynamic parameter, V θ max (the maximum tangential velocity). Considerable efforts have been made to find the characteristics of flame propagation; flame shape, speed, diameter, and steadiness of propagation, limits of propagation, the Lewis number effects, and the aerodynamic structure, as well as whether pressure is raised behind the flame or not are all important characteristics. In this article, the progress accomplished in the experimental, theoretical and numerical investigations of the rapid flame propagation along a vortex axis is reviewed. Based on the knowledge of the flame characteristics, modeling combustion in turbulence, which consists of fine-scale eddies, is discussed.

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