Browse > Article
http://dx.doi.org/10.3795/KSME-B.2004.28.6.659

X-ray Micro-Imaging Technique for Simultaneous Measurement of Size and Velocity of Micro-Bubbles  

Kim, Seok (포항공과대학교 대학원 기계공학과)
Lee, Sang-Joon (포항공과대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.28, no.6, 2004 , pp. 659-664 More about this Journal
Abstract
It is important to measure precisely the size and velocity of micro-bubbles used in various field. The synchrotron X-ray micro-imaging technique was employed to measure the size and velocity of micro-bubbles moving in an opaque tube simultaneously. Phase contrast images were obtained at interfaces of micro-bubbles between water and air due to their different refractive indices. The X-ray micro-imaging technique was found to measure an optical fiber with an accuracy of 0.2%. Micro-bubbles of 20∼60$\mu\textrm{m}$ diameter moving upward in an opaque tube (${\Phi}$＝2.7mm) were tested to measure bubble size and up-rising velocity. For DI water, the measured velocity of micro-bubbles is nearly proportional to the square of bubble size, agreed well with the theoretical result. In addition, the synchrotron X-ray micro-imaging technique can measure accurately the size and velocity of several overlapped micro-bubbles.
Keywords
X-ray Micro-Imaging; Phase Contrast; Micro-Bubble; Two-Phase Flow; Contrast Agent;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Dodge, L. G., 1984, 'Calibration of Malvern Particle Sizer,' Applied Optics, Vol. 23, pp. 2415-2419   DOI   ScienceOn
2 Moore, R., 1999, 'Optimal Edge-Based Shape Detection,' Mathematics Dept., Macquarie University, Sydney
3 Kevin, W., Skyba, D. M. and Firschke, C., 1997, 'Interactions Between Microbubbles and Ultrasound: In Vitro and In Vivo Observations,' Journal of the American College of Cardiology, Vol. 29, pp. 1081-1088   DOI   ScienceOn
4 Leavers, V. F., 1992, 'Shape Detection in Computer Vision Using the Hough Transform,' Springer, London
5 Hassan, Y. A., Ortiz-Villafuerte, J. and Schmidl , W. D., 2001, 'Three-Dimensional Measurements of Single Bubble Dynamics in a Small Diameter Pipe Using Stereoscopic Particle Image Velocimetry,' International Journal of Multiphase Flow, Vol. 27, pp. 817-842   DOI   ScienceOn
6 Maeda, M., Kawaguchi, T. and Hishida, K., 2000, 'Novel Interferometric Measurement of Size and Velocity Distributions of Spherical Particles in Fluid Flows,' Measurement Science and Technology, Vol. 11, pp. L13-L18   DOI   ScienceOn
7 Hassan, Y. A., Ortiz-Villafuerte, J. and Schmidl, W., 1999, 'Measurements of a Rising Single Bubble in Stagnant Liquid,' Journal Flow Visualization and Image Processing, Vol. 6, pp. 129-137   DOI
8 Hwu, Y., Tsai, W., Groso, A., Margaritondo, G. and Je, J. H., 2002, 'Coherence-Enhanced Synchrotron Radiology: Simple Theory and Practical Application,' Journal of Physics D: Applied Physics, Vol. 35, pp. R105-R120   DOI   ScienceOn
9 Veltman, J., Goossen, T., Laguna, P., Wijkstra, H. and Rosette, J., 2002, 'New Technical Improvements for TRUS in the Diagnosis of Prostate Cancer,' European Urology Supplements, Vol. 1, pp. 8-14   DOI   ScienceOn
10 Brenn, G., Braeske, H. and Durst, F., 1961, 'Investigation of the Unsteady Two-phase Flow with Small Bubbles in a Model Bubble Column Using Phase-Doppler Anemometry,' Chemical Engineering Science, Vol. 57, pp. 5143-5159   DOI   ScienceOn
11 Baek, S. J. and Lee, S. J., 1996, 'A New Two-Frame Particle Tracking Algorithm Using Match Probability,' Experiments in Fluids, Vol. 22(1), pp. 23-32   DOI
12 Clift, R., 1978, 'Bubbles, Drops, and Particles,' Academic, NewYork
13 Lim, B., Khil, T., Jung, K. and Yoon, Y., 2003, 'Drop Size Measurement Using Image Processing Method under High Ambient Pressure Condition,' Proceeding of 2nd. KSV Conference, POSTECH, Pohang, Korea, Nov. 14, pp. 111-114   과학기술학회마을