The Proceedings of the International Conference on Nuclear Engineering (ICONE)
Online ISSN : 2424-2934
2007.15
Session ID : ICONE15-10312
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ICONE15-10312 COMPARISON BETWEEN WIRE-MESH SENSORS AND CONDUCTIVE NEEDLE-PROBES FOR MEASUREMENTS OF TWO-PHASE FLOW PARAMETERS
Annalisa ManeraBasar OzarSidharth ParanjapeMamoru IshiiHorst-Michael Prasser
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Abstract
Measurements of two-phase flow parameters such as void-fraction, bubble velocities, and interfacial area densities have been performed in an upwards air-water flow at atmospheric pressure by means of a four-tip needle-probe and a wire-mesh sensor. For the first time, a direct comparison between the two measuring techniques has been carried out. Both techniques are based on the measurement of the fluid conductivity. For void fraction and velocity measurements, similarity exists between the two methodologies for signal analysis. A significantly different approach is followed, instead, for the estimation of the interfacial area concentration: while the evaluation based on the needle-probe signal is carried out by using projections of the gas-liquid interface velocity, the evaluation based on the wire-mesh signals consist in a full reconstruction of the bubbles interfaces. The comparison between the two techniques shows a good agreement.
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© 2007 The Japan Society of Mechanical Engineers
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