Abstract
This paper discusses the progress of premixed flames after undergoing strong interactions with pressure driven disturbances. Even in one dimensional models of these interactions, if a pressure drop is fast enough and sufficiently great, extinction of the flame can result.
For two-dimensional interactions, a further very important mechanism is the baroclinic effect where the force due to the imposed pressure gradient acts on a region of fluid with variable density (i.e. the flame) which is at an angle to it, thus producing a vorticity field which can break up the flame. This was clearly demonstrated by the classic experimental work of Markstein. An overview is presented of recent numerical work that shows the dependence of the vorticity generated in the fluid on the viscosity and the strength of the reaction.
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McIntosh, A.C. (1995). Pressure-driven disturbances in fluid dynamic interactions with flames. In: Buckmaster, J., Takeno, T. (eds) Modeling in Combustion Science. Lecture Notes in Physics, vol 449. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-59224-5_13
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DOI: https://doi.org/10.1007/3-540-59224-5_13
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