Gamma-ray attenuation method for void fraction measurement in fluctuating two-phase liquid metal flows
| Autor: | T.K. Thiyagarajan, N. Venkatramani, V.K. Rohatgi, N.S. Dixit, P. Satyamurthy |
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| Rok vydání: | 1991 |
| Předmět: |
Liquid metal
Materials science business.industry Applied Mathematics Flow (psychology) Magnitude (mathematics) Fraction (chemistry) Astrophysics::Cosmology and Extragalactic Astrophysics Mechanics Flow system Optics Phase (matter) Gamma ray attenuation business Porosity Instrumentation Engineering (miscellaneous) |
| Zdroj: | Measurement Science and Technology. 2:69-74 |
| ISSN: | 1361-6501 0957-0233 |
| DOI: | 10.1088/0957-0233/2/1/011 |
| Popis: | Void fraction measurements are made by the gamma -radiation attenuation method in mercury-air two-phase flow systems. To measure the void fraction with an accuracy of the order of 5%, the required gamma -ray source and the strength of the source is experimentally found for mercury-air two-phase flow systems of pathlength up to 80 mm using 137Cs and 60Co. This is achieved by comparing the simulated void fraction and the measured void fraction. Since the dynamic fluctuations affect the accuracy of the measurement, the dynamic effect is analysed by simulating void fraction fluctuations of different magnitude. If the fluctuation magnitude is known then the required correction can be applied to the measured void fraction. The measured void fraction is compared with the predicted values by a theoretical model available for the upward liquid metal-gas two-phase flow in pipes. |
| Databáze: | OpenAIRE |
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