Probabilistic determination of two-phase flow regimes in horizontal tubes utilizing an automated image recognition technique |
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Authors: | Emad W Jassim Ty A Newell John C Chato |
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Institution: | (1) Department of Mechanical Science and Engineering, University of Illinois, 1206 W. Green St., Urbana, IL, USA |
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Abstract: | Probabilistic two-phase flow map data is experimentally obtained for R134a at 25.0, 35.0, and 49.7°C, R410A at 25.0°C, mass
fluxes from 100 to 600 kg/m2-s, qualities from 0 to1 in 8.00, 5.43, 3.90, and 1.74 mm I.D. single, smooth, adiabatic, horizontal tubes in order to extend
probabilistic two-phase flow map modeling techniques to single tubes. A new web camera based flow visualization technique
utilizing an illuminated diffuse striped background was used to enhance images, detect fine films, and aid in the automated
image recognition process developed in the present study. This technique has an average time fraction classification error
of less than 0.01. |
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Keywords: | |
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