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ISSN Online: 2377-424X

International Heat Transfer Conference 5
September, 3-7, 1974, Tokyo, Japan

STATISTICAL METHODS FOR MEASUREMENT AND ANALYSIS IN TWO-PHASE PLOW

Get access (open in a dialog) DOI: 10.1615/IHTC5.480
pages 200-204

Abstrakt

A fast response, linearized x-ray void measurement system has been used to obtain statistical measurements in normally fluctuating air-water flow in a rectangular channel. It is demonstrated that the probability density function (PDF) of the fluctuations in void fraction may be used as an objective and quantitative flow pattern discriminator for the three major patterns of bubbly, slug, and annular flows. This concept has been applied to data over the range of 0.0 to 120 fps mixture velocity to show that slug flow is simply a transitional, periodic time combination of bubbly and annular flows. Calculation of slug length and residence time ratios are readily obtainable from the statistical measurements.