Investigation of a method for real time quantification of gas bubbles in pipelines
Investigation of a method for real time quantification of gas bubbles in pipelines
The need to measure the dynamic void fraction (the proportion of flowing bubbly liquid that is gas) is common across many power, processing and manufacturing industries. Many such pipelines and liquids are optically opaque, and work on margins that require a low cost solution that is not commensurate with the size of the challenge. Such a solution will therefore be a compromise, and in this paper costs are reduced by using a narrowband acoustic solution that cannot, on its own, contain enough information to characterise the void fraction in real time unambiguously. The ambiguity is reduced using likely estimates of the general shape of the bubble size distribution so that, with a single source-receiver pair attached to the outside of the pipe, the absolute gas content can be estimated. Whilst the data that are required a priori (the general shape of the bubble size distribution) are not identical to the output of the inversion (the absolute void fraction of gas entrained as bubbles in the flow), the requirement for such a priori information could limit the usefulness of the technique in industry.
bubble dynamics, mercury (element), pipelines, transducers, acoustical measurements
502-513
Baik, Kyungmin
0a0130e8-bec9-4cd0-8172-7e352d04f764
Leighton, Timothy
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
Jiang, Jian
b034e623-ea89-4b17-88e3-4276c260db99
1 August 2014
Baik, Kyungmin
0a0130e8-bec9-4cd0-8172-7e352d04f764
Leighton, Timothy
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
Jiang, Jian
b034e623-ea89-4b17-88e3-4276c260db99
Baik, Kyungmin, Leighton, Timothy and Jiang, Jian
(2014)
Investigation of a method for real time quantification of gas bubbles in pipelines.
Journal of the Acoustical Society of America, 136 (2), .
(doi:10.1121/1.4881922).
Abstract
The need to measure the dynamic void fraction (the proportion of flowing bubbly liquid that is gas) is common across many power, processing and manufacturing industries. Many such pipelines and liquids are optically opaque, and work on margins that require a low cost solution that is not commensurate with the size of the challenge. Such a solution will therefore be a compromise, and in this paper costs are reduced by using a narrowband acoustic solution that cannot, on its own, contain enough information to characterise the void fraction in real time unambiguously. The ambiguity is reduced using likely estimates of the general shape of the bubble size distribution so that, with a single source-receiver pair attached to the outside of the pipe, the absolute gas content can be estimated. Whilst the data that are required a priori (the general shape of the bubble size distribution) are not identical to the output of the inversion (the absolute void fraction of gas entrained as bubbles in the flow), the requirement for such a priori information could limit the usefulness of the technique in industry.
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Published date: 1 August 2014
Additional Information:
Co-funded by Oak Ridge National Laboratory, Tennessee, US, and the UK Science & Tech. Res. Council
Keywords:
bubble dynamics, mercury (element), pipelines, transducers, acoustical measurements
Organisations:
Acoustics Group
Identifiers
Local EPrints ID: 364879
URI: http://eprints.soton.ac.uk/id/eprint/364879
ISSN: 0001-4966
PURE UUID: 45d98da9-2016-4ac8-8bfe-c8dabfc2944a
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Date deposited: 15 May 2014 12:43
Last modified: 15 Mar 2024 02:45
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Author:
Kyungmin Baik
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