Turbulent transport in a confined premixed flame

作者: I.G. Shepherd , J.B. Moss , K.N.C. Bray

DOI: 10.1016/S0082-0784(82)80214-2

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摘要: The turbulent flux of product is investigated in the difficult experimental environment ducted premixed combustion. Velocity and mixture state are measured simultaneously using LDA Mie scattering. bi-modal nature scalar pdfs establishes combustion as being that characteristics thin-flame burning. In these circumstances velocity may be conditioned by local to permit identification respective contributions from two states, unburnt reactant fully burnt product. mean velocities so determined evaluation flux, which found act counter-gradient sense. significantly larger than observed open flame experiments, consistent with buoyant process envisaged for transport greater pressure gradients encountered counter gradient accompanied turbulence generation. present results bracketed predictions several one-dimensional analyses a scaling law presented reconciles them similar measurements.

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