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Statistical Moments and One-Point PDF of Mixture Fraction at Mixing in a Coaxial Jet Mixer

DOI: 10.1615/ICHMT.2006.TurbulHeatMassTransf.1200
pages 569-572

Andrei Chorny
A.V. Luikov Heat and Mass Transfer Institute

M. Yu. Chernik
Physicochemical Hydrodynamics Laboratory, A. V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, Minsk, 220072, Belarus


Based on the experimental results of mixture fraction (scalar) and its rms fluctuations in confined coaxial flows in the regime with a recirculation zone, scalar statistical moments (up to 4 orders) and one-point scalar probability density functions (PDFs) at different distances from a mixer nozzle are analyzed. It is shown that high moments are indicative for detailed information about a scalar homogeneous field to be formed. Comparison of the experimental and analytical PDFs reveals an essential disagreement for the large-intermittence flow region.

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