Simultaneous measurement of bubble size, velocity and void fraction in two-phase bubbly flows with time-resolved X-ray imaging
SCIE
SCOPUS
- Title
- Simultaneous measurement of bubble size, velocity and void fraction in two-phase bubbly flows with time-resolved X-ray imaging
- Authors
- Jung, SY; Park, HW; Lee, SJ
- Date Issued
- 2014-03
- Publisher
- WILEY-BLACKWELL
- Abstract
- Key parameters of two-phase flows, such as void fraction and microscale bubble size, shape and velocity, were simultaneously measured using time-resolved X-ray imaging. X-ray phase-contrast imaging was employed to obtain those parameters on microbubbles. The void fraction was estimated from X-ray absorption. The radii of the measured microbubbles were mostly smaller than 20 mm, and the maximum velocity was 39.442 mm s(-1), much higher than that in previous studies. The spatial variations of the void fraction were consecutively obtained with a small time interval. This technique would be useful in the experimental analysis of bubbly flows in which microbubbles move at high speed.
- Keywords
- X-ray imaging; bubbly flow; void fraction; bubble size; bubble velocity; NEUTRON-RADIOGRAPHY; MULTIPHASE FLOWS; VISUALIZATION; VELOCIMETRY; ABSORPTION; FLOTATION; REACTOR; MRI
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/11048
- DOI
- 10.1107/S1600577513034760
- ISSN
- 0909-0495
- Article Type
- Article
- Citation
- JOURNAL OF SYNCHROTRON RADIATION, vol. 21, page. 424 - 429, 2014-03
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