平面乱流噴流予混合火炎における局所火炎構造(燃焼・反応,一般講演)

概要

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Three-dimensional direct numerical simulations of turbulent plane jet premixed flames have been conducted to investigate local structures of turbulent premixed flames in shear flow. Detailed kinetic mechanism including 12 reactive species and 27 elementary reactions is considered to represent reactions of hydrogen-air mixture. Eddy structure is produced by velocity difference in burnt gases. This difference is caused by inflow burnt gas and produced burnt gas and forms shear flow along the edge of generated OH radical. In the downstream region of jet flame, strong fine scale eddies distort flame surface intricately, and heat release rate tends to be high where flame front is convex towards burnt side. The unburnt mixture islands appear behind flame front and enhance turbulent burning velocity.
日本流体力学会の論文
2010-09-09