A Bayesian approach to characterising multi-phase flows using magnetic resonance: application to bubble flows |
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Authors: | Holland D J Blake A Tayler A B Sederman A J Gladden L F |
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Institution: | Department of Chemical Engineering and Biotechnology, University of Cambridge, Pembroke Street, Cambridge CB2 3RA, United Kingdom. djh79@cam.ac.uk |
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Abstract: | Magnetic Resonance (MR) imaging is difficult to apply to multi-phase flows due to both the inherently short T?* characterising such systems and the relatively long time taken to acquire the data. We develop a Bayesian MR approach for analysing data in k-space that eliminates the need for image acquisition, thereby significantly extending the range of systems that can be studied. We demonstrate the technique by measuring bubble size distributions in gas-liquid flows. The MR approach is compared with an optical technique at a low gas fraction (~2%), before being applied to a system where the gas fraction is too high for optical measurements (~15%). |
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