Void fraction measurement in water-steam mixture by means of a 252Cf neutron source |
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| Affiliation: | 1. Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Mianyang 621010, PR China;2. School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, PR China;3. Department of Mechanical Engineering, University of Houston, Houston, TX 77204, United States;1. Institute of Chemistry, University of Tartu, Ravila 14ª, 50411 Tartu, Estonia;2. Instituto de Electroquímica, Universidad de Alicante, Apartado 99, 03080 Alicante, Spain |
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| Abstract: | The use of a 252Cf neutron source is proposed for void fraction measurement. The method is based on the detection of thermal neutrons obtained by the slowing-down of fast neutrons in water-steam mixtures.The performances of the neutron gauge are compared with those of a gauge based on the well-known gamma-ray attenuation method. Measurements were performed on an air-Plexiglas model of void distributions.With the neutron method it is possible to evaluate the mean void fraction of the mixture flowing in a channel regardless, within experimental error limits, of the actual void distribution. |
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