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MIXING QUANTIFICATION BY VISUAL IMAGING ANALYSIS
Citation:
Gullett, B., P. Groff, AND L. Stefanski. MIXING QUANTIFICATION BY VISUAL IMAGING ANALYSIS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-94/059.
Description:
The paper reports on development of a method for quantifying two measures of mixing, the scale and intensity of segregation, through flow visualization, video recording, and software analysis. his non-intrusive method analyzes a planar cross section of a flowing system from an instantaneous data record, thereby eliminating the need for statistical analysis of a large number of point measurements at multiple locations throughout the system to characterize the mixing. his is important in transient systems where the time scale of mixing phenomena is much shorter than the required period of sampling or where the measurement effort must be limited in duration. n this paper, a real-time method is used to quantify mixing characteristics in a cold-flow model of a high-temperature gas/solid reactor so that reactor design and operation can be optimized to promote reaction efficiency. his method may be useful for studying a variety of mixing systems in which multiphase components or tracers are visually distinguishable. odifications to the method as described here will allow it to be applied to high-temperature systems such as encountered during fuel combustion.