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Proceedings Paper

Improved void fraction measurement by flow regime identification for gas liquid two-phase flows
Author(s): Chunguo Jing; Quiguo Bai; Bin Liu
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Paper Abstract

The gamma ray scattering energy spectrum detected by one detector was presented to distinguish the gas liquid two-phase flow regime of vertical pipe. The simulation geometries of the gamma ray scattering measurement were built using Monte Carlo software Geant4. Computer simulations were carried out with homogeneous flow, annular flow and slug flow. The results show that the scattering energy characters of homogeneous flow and annular flow have significantly different. The scattering spectrum of slug flow has a little similar to homogeneous flow or annular flow while gas slug exists too short or too long in measuring cycle. The RBF neural networks were used to predict the flow regime. The results show that the homogeneous flow and annular flow can be completely distinguished and the mostly slug flows were exactly recognized by the neural network. It is demonstrated that the method of one detector scattering energy spectrum has the ability to identify the typical gas liquid flow regime of vertical pipe and fit the applications in engineering. The void fraction precision was improved by the flow regime compensation.

Paper Details

Date Published: 13 October 2008
PDF: 6 pages
Proc. SPIE 7128, Seventh International Symposium on Instrumentation and Control Technology: Measurement Theory and Systems and Aeronautical Equipment, 71281M (13 October 2008); doi: 10.1117/12.806725
Show Author Affiliations
Chunguo Jing, Northeastern Univ. at Qinhuangdao (China)
Quiguo Bai, Northeastern Univ. at Qinhuangdao (China)
Bin Liu, Yanshan Univ. (China)


Published in SPIE Proceedings Vol. 7128:
Seventh International Symposium on Instrumentation and Control Technology: Measurement Theory and Systems and Aeronautical Equipment

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