OSA's Digital Library

Applied Optics

Applied Optics


  • Vol. 44, Iss. 22 — Aug. 1, 2005
  • pp: 4648–4653

Fringe probing of gas–liquid interfacial film in a microcapillary tube

Xishi Wang and Huihe Qiu  »View Author Affiliations

Applied Optics, Vol. 44, Issue 22, pp. 4648-4653 (2005)

View Full Text Article

Enhanced HTML    Acrobat PDF (826 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



An optical diagnostic technique has been developed to measure the gas–liquid interfacial film thickness in microcapillary two-phase flows. The spatial frequencies from the multiscattering measured with a CCD camera are used to determine the slug diameter and film thickness. It is found that, with an optimized optical orientation angle, the spatial frequency method shows great accuracy in the measurements. To demonstrate the capability of the newly developed method, a validation experiment was conducted in water–air and water–honey mixture–air two-phase flows. We measured the spatial frequency variations when the microbubble and slug were pulsating by utilizing a highly accurate signal processing technique and a five-point interpolation method. This newly developed optical method is easy to implement, and it will be a useful technique for two-phase flow measurements.

© 2005 Optical Society of America

OCIS Codes
(120.1880) Instrumentation, measurement, and metrology : Detection
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(280.2490) Remote sensing and sensors : Flow diagnostics

Original Manuscript: June 14, 2004
Manuscript Accepted: December 17, 2004
Published: August 1, 2005

Xishi Wang and Huihe Qiu, "Fringe probing of gas–liquid interfacial film in a microcapillary tube," Appl. Opt. 44, 4648-4653 (2005)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. D. Sinton, D. Erickson, D. Li, “Microbubble lensing-induced photobleaching (μ-BLIP) with application to microflow visualization,” Exp. Fluids 35, 178–187 (2003). [CrossRef]
  2. J. P. Longtin, C.-L. Tien, “Efficient laser heating of transparent liquids using multiphoton absorption,” Int. J. Heat Mass Transfer 40, 951–959 (1997). [CrossRef]
  3. O. Baghdassarian, H.-C. Chu, B. Tabbert, G. A. Williams, “Spectrum of luminescence from laser-induced bubbles in water and cryogenic liquids,” in Proceedings of the Fourth International Symposium on Cavitation, http://resolver.caltech.edu/CAV2001:session.A2.001 .
  4. A. Casner, J.-P. Delville, “Laser-induced hydrodynamic instability of fluid interfaces,” Phys. Rev. Lett. 90, 144503 (2003). [CrossRef] [PubMed]
  5. P. A. Dayton, J. E. Chomas, A. F. H. Lum, J. S. Allen, J. R. Lindner, S. I. Simon, K. W. Ferrara, “Optical and acoustical dynamics of microbubble contrast agents inside neutrophils,” Biophys. J. 80, 1547–1556 (2001). [CrossRef] [PubMed]
  6. H.-H. Qiu, C. T. Hsu, “Minimum deviation of spatial frequency in large-particle sizing,” Appl. Opt. 37, 6787–6794 (1998). [CrossRef]
  7. H.-H. Qiu, “Eliminating high-order scattering effects in optical microbubble sizing,” J. Opt. Soc. Am. A 20, 690–697 (2003). [CrossRef]
  8. H. H. Qiu, M. Sommerfeld, F. Durst, “High-resolution data processing for phase-Doppler measurements in a complex two-phase flow,” Meas. Sci. Technol. 2, 455–463 (1991). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited