Abstract
The study is an examination of two-phase dispersed air bubble flow about a cylindrical conductor emitting a constant heat flux. The technique of Particle Image Velocimetry is utilized in order to obtain a full-field non-invasive measurement of the resulting bubbly flow velocity field. The employed approach utilizes a flow visualization technique in which the instantaneous velocity profile of a given flow field is determined by digitally recording particle or bubble images within the flow over multiple successive video frames and then conducting a completely computational analysis of the data. The use of particle tracking algorithms which perform a point-by-point matching of seed images from one frame to the next allows construction of particle or bubble pathlines and instantaneous velocity field. Results were initially obtained for a synthetically created flow field and a single phase liquid convective field seeded with flow-following tracer particles. The method was additionally extended to measurements within a gas/liquid system in which bubble rise velocities over a substantial two-dimensional flow area were determined in order to demonstrate the effectiveness of the developed digital data acquisition and analysis methodology.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Adrian, R. J. 1991: Particle-imaging techniques for experimental fluid mechanics. Ann. Review Fluid Mech. 23 (to be published)
Adrian R. J. 1986a: Multipoint optical measurements of simultaneous vectors in unsteady flow — A Review. Int. J. Heat Fluid Flow 7, 127
Adrian, R. J. 1986b: Image shifting technique to resolve directional ambiguity in double-pulsed velocimetry. Appl. Opt. 25, 3855
Adrian, R. J.; Landreth, C. C. 1988: Overview of Particle Image Velocimetry. Laser Topics, Spring 1988, 10
Canaan, R. E. 1990: Full-field velocity measurements of single and two phase flows using digital pulsed laser velocimetry. M. S. Thesis, Texas A&M University, College Station, TX 77843
Dudderar, T. D.; Meynart, R.; Simpkins, P. G. 1988: Full field laser metrology for fluid velocity measurement. Optics Lasers Engineering 9, 163
Guezennec, Y. G.: Kiritsis, N. 1989: Statistical investigation of errors in particle image velocimetry. ICALEO'89, 68:130–140, Orlando, FL, Laser Inst. Amer., p. 195
Hardy, R. L. 1971: Multiquadric equations of topography and other irregular surfaces. J. Geophysics Res, 76, 1905
Hassan, Y. A.: Blanchat, T. K.; Hild, R. D. 1990a: Full-field imaging technique using high-energy pulsed laser velocimetry. Conference on Imaging Algorithms and Techniques, SPIE/SPSE Proceedings, 1244, 1990
Hassan, Y. A.; Blanchat, T. K.; Seeley, C. 1990b: (to be published)
Hild, R. D. 1989: Single phase flow visualization using pulsed laser velocimetry. Master's Thesis, Texas A&M University, College Station, TX. 77843
Khalighi, B. 1989: Study of the intake swirl process in an engine using flow visualization and particle tracking velocimetry. Flow Visualization ASME FED-85, 37
Kimura, I.; Takamori, T. 1986: Image processing of flow around a circular cylinder by using correlation technique. Flow Visualization IV, 221
Kobayashi, T.; Saga, T.: Segawa, S. 1985: Some considerations on automatic image processing of pathline photographs. Proc. of the Fourth International Symposium on Flow Visualization, p. 241
Landreth, C. C.; Adrian, R. J. 1988: Measurement and refinement of velocity data using high image density analysis in particle image velocimetry. Applications of Laser Anemometry to Fluid Mechanics — Fourth Int. Symposium, Lisbon, Portugal, 11–14 July 1988
Lourenco, L. M.; Krothapalli, A. 1987: The role of photographic parameters in laser speckle or particle image displacement velocitmetry. Exp. Fluids, 5, 29
Marston, P. L. 1989: Light scattering from bubbles in water. Ocean (IEEE Publication No. 89CH2780-5, New York 1989, 1186
Nishino, K.; Kasagi, N.; Hirata, M. 1989: Three-dimensional particle tracking velocimetry based on automated digital image processing. J. Fluids Engineering 111, 384
Prasad, A. K.; Adrian, R. 1; Landreth, C. C.; Offutt, P. W. 1990: Effect of resolution on the speed and accuracy of particle image velocimeter interrogations, Proc. of the Twelfth Symposium on Turbulence, Rolla, Missouri. September 24–26, 1990
Racca, R. G.; Dewey, J. M. 1989: Automatic particle tracking in a three-dimensional flow field, SPIE High Speed Photography, Strasbourg 1984, 491, 864
Simpkins, P. G.; Dudderar, T. D. 1978: Laser speckle measurement of transient bernard convection. J. Fluid Mech. 89, 665
Utami, T., Ueno, T. 1987: Experimental study on the coherent structure of turbulent open-channel flow using visualization and picture processing. J. Fluid Mech., 174, 399–440
Van Dyke, M. ed. 1982: An album of fluid motion. Stanford: Parabolic Press
Willis, G. E.; Deardorff, J. W. 1974: A laboratory model for the development of the unstable planetary boundary layer. J. Atmos. Sci., 31, 1297–1307
Yamamoto, F.; Dai, Y; Koukawa, M.; Itoh, M.; Uemura, T. 1989: Numerical simulation on error analysis in particle tracking velocimeter by correlation method. Flow visualization 1989, ASME FED 85, pp. 9
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Hassan, Y.A., Canaan, R.E. Full-field bubbly flow velocity measurements using a multiframe particle tracking technique. Experiments in Fluids 12, 49–60 (1991). https://doi.org/10.1007/BF00226565
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00226565