Scalar length scales and spatial averaging effects in turbulent piloted methane/air jet flames
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The effects of spatial averaging in measurements of scalar variance and scalar dissipation in three piloted CH4/air jet flames (Sandia flames C, D, and E) were studied. The variance of mixture fraction decreased linearly with increasing filter width, while the variance of scalar dissipation followed an exponential dependence. The results provided new insights on the small-scale structure of turbulent jet flames and on the spatial resolution requirements for measurements of scalar variance and scalar dissipation. This is an abstract of a paper presented at the 30th International Symposium on Combustion (Chicago, IL 7/25-30/2004).
author list (cited authors)
Barlow, R. S., & Karpetis, A. N.