Assessment of an Ultrasonic Sensor and a Capacitance Probe for Measurement of Two-phase Mixture Level
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概要
- 論文の詳細を見る
We perform a comparison of two-phase mixture levels measured by an ultrasonic sensor and a two-wire type capacitance probe with visual data under the same experimental conditions. A series of experiments are performed with various combinations of airflow and initial water level using a test vessel with a height of 2 m and an inner diameter of 0.3 m under atmospheric pressure and room temperature. The ultrasonic sensor measures the two-phase mixture level with a maximum error of 1.77% with respect to the visual data. The capacitance probe severely under-predicts the level data in the high void fraction region. The cause of the error is identified as the change of the dielectric constant as the void fraction changes when the probe is applied to the measurement of the two-phase mixture levels. A correction method for the capacitance probe is proposed by correcting the change of the dielectric constant of the two-phase mixture. The correction method for the capacitance probe produces a r.m.s. error of 5.4%.
- 社団法人 日本原子力学会の論文
- 2004-12-25
著者
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Lee Dong
Department Of Environmental Atmospheric Science Pukyong National University
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KIM Chang
Department of Internal Medicine and AIDS Research Institute, Yonsei University College of Medicine
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Kim Chang
Department Of Ceramic Science And Engineering Korea Advanced Institute Of Science And Technology
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Lee Dong
Department Of Biotechnology College Of Natural Science Dongguk University
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NO Hee
Department of Nuclear Engineering, Korea Advanced Institute of Science and Technology
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No Hee
Department Of Nuclear And Quantum Engineering Korea Advanced Institute Of Science And Technology
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Kim Chang
Department Of Nuclear And Quantum Engineering Korea Advanced Institute Of Science And Technology
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Lee Dong
Department Of Aerospace Engineering Chonbuk National University
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Kim Chang
Department Of Biochemistry University Of Oxford
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