Diffusively anisotropic model for the deflagration-to-detonation transition

作者：Kagan Leonid^*; Sivashinsky Gregory

来源：Combustion Theory and Modelling, 2014, 18(2): 261-271.

DOI：10.1080/13647830.2014.889324

• transitions in narrow gaps and capillaries
• deflagration-to-detonation transition
• Fanno's model
• combustion in hydraulically resisted flows

To elucidate the key mechanisms responsible for the transition from deflagrative to detonative combustion in smooth-walled channels, a reactive flow with anisotropic thermal and molecular diffusivities is considered. Setting the transverse diffusivities large compared to longitudinal diffusivities, the initially formed deflagration (despite no-slip boundary conditions) appears to be nearly planar and not accelerating. This, however, does not prevent its eventual abrupt transition to Chapman-Jouguet detonation.

• 出版日期2014-3-4