Improved void fraction measurement by flow regime identification for gas liquid two-phase flows

Chunguo Jing; Quiguo Bai; Bin Liu

doi:10.1117/12.806725

13 October 2008 Improved void fraction measurement by flow regime identification for gas liquid two-phase flows

Chunguo Jing, Quiguo Bai, Bin Liu

Proceedings Volume 7128, Seventh International Symposium on Instrumentation and Control Technology: Measurement Theory and Systems and Aeronautical Equipment; 71281M (2008) https://doi.org/10.1117/12.806725
Event: Seventh International Symposium on Instrumentation and Control Technology, 2008, Beijing, China

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.

Citation Download Citation

Chunguo Jing, Quiguo Bai, and Bin Liu "Improved void fraction measurement by flow regime identification for gas liquid two-phase flows", Proc. SPIE 7128, Seventh International Symposium on Instrumentation and Control Technology: Measurement Theory and Systems and Aeronautical Equipment, 71281M (13 October 2008); https://doi.org/10.1117/12.806725

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available