Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지

Analysis of Density Distribution for Unsteady Butane Flow Using Three-Dimensional Digital Speckle Tomography

  • Ko, Han-Seo (School of Mechanical Engineering, Sungkyunkwan University) ;
  • Park, Kwang-Hee (Graduate School, Department of Mechanical Engineering, Sungkyunkwan University) ;
  • Kim, Yong-Jae (Graduate School, Department of Mechanical Engineering, Sungkyunkwan University)
  • Published : 2004.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

Transient and asymmetric density distributions have been investigated by three-dimensional digital speckle tomography. Multiple CCD images captured movements of speckles in three angles of view simultaneously because the flows were asymmetric and transient. The speckle movements between no flow and downward butane flow from a circular half opening have been calculated by a cross-correlation tracking method so that those distances can be transferred to deflection angles of laser rays for density gradients. The three-dimensional density fields have been reconstructed from the deflection angles by a real-time multiplicative algebraic reconstruction technique (MART).

Keywords

References

  1. Fomin, N. A., 1998, Speckle Photography for Fluid Mechanics Measurements, Springer, Berlin
  2. Francon, M., 1979, Laser Speckle and Applications in Optics, Academic Press, New York
  3. Gordon, R., 1974, 'A Tutorial on ART,' IEEE Trans. on Nuclear Science, Vol. NS-21, pp. 78-92
  4. Hanson, K. M. and Weckwung, G. W., 1985, 'Local Basis Function Approach to Computed Tomography,' App. Opt., Vol. 24, No. 23, pp. 4028-4039 https://doi.org/10.1364/AO.24.004028
  5. Kak, A. C. and Slaney, M., 1987, Principles of Computerized Tomographic Imaging, IEEE Press, New York
  6. Kastell, D., Kihm, K. D. and Fletcher, L. S., 1992, 'Study of Laminar Thermal Boundary Layers Occurring around the Leading Edge of a Vertical Isothermal Wall Using a Specklegram Technique,' Exper. Fluids, Vol. 13, pp. 249-256 https://doi.org/10.1007/BF00189017
  7. Kihm, K. D., 1987, 'Laser Speckle Photography Technique Applied for Heat and Mass Transfer Problems,' Advan. in Heat Transfer, Vol. 30, pp. 255-311 https://doi.org/10.1016/S0065-2717(08)70253-3
  8. Kihm, K. D., Ko, H. S. and Lyons, D. P., 1998, 'Tomographic Identification of Gas Bubbles in Two-Phase Flows with the Combined Use fo the Algebraic Reconstruction Technique and the Genetic Algorithm,' Opt. Lett., Vol. 23, No. 9, pp. 658-660 https://doi.org/10.1364/OL.23.000658
  9. Kim, S. K., 2001, 'An Experimental Study of Developing and Fully Developed Flows in a Wavy Channel by PIV,' KSME Int. J., Vol. 15, No. 12, pp. 1853-1859
  10. Ko, H. S., Ikeda, K. and Okamoto, K., 2002, 'Combination of Holographic Interfereometry and Digital Speckle System for Measurement of Density Distributions,' Meas. Sci. Tech., Vol. 13, No. 12, pp. 1974-1978 https://doi.org/10.1088/0957-0233/13/12/323
  11. Ko, H. S. and Kihm, K. D, 1999, 'An Extended Algebraic Reconstruction Technique(ART) for Density-Gradient Projections:Laser Speckle Photographic Tomography,' Exper. Fluids, Vol. 27, No. 6, pp. 542-550 https://doi.org/10.1007/s003480050378
  12. Ko, H. S. and Kim, Y. -J., 2002, 'Comparison and Analysis of Tomography Methods for Reconstruction of Three-dimensional Density Distributions in Two-phase Flows,' J. Nondestructive Testing, Vol. 22, No. 5, pp. 545-556
  13. Ko, H. S. and Kim, Y. -J., 2003, 'Tomographic Reconstruction of Two-phase flows,' KSME Int. J., Vol. 17, No. 4, pp. 571-580
  14. Ko, H. S., Lyons, D. P., and Kihm, K. D., 1997, 'A Comparative Study of Algebraic Reconstruction (ART) and Genetic Algorithms (GA) for Beam Deflection Tomography,' ASME Fluids Engrg. Div. Summer Meeting, Vancouver, Canada, Paper FEDSM 97-3104
  15. Liu, T. C., Merzkirch, W., and Oberste-Lehn, K., 1989, 'Optical Tomography Applied to a Speckle Photographic Measurement of Asymmetric Flows with Variable Density,' Exper. Fluids, Vol. 7, pp. 157-163 https://doi.org/10.1007/BF02332980
  16. Partington, J. R., 1953, Physico-Chemical Optics, Vol. IV, An Advanced Treatise on Physical Chemistry, Longmans Green, London
  17. Qiu, H., Hsu, C. T. and Liu, W., 2001, 'The Effect of Second Order Refraction on Optical Bubble Sizing in Multiphase Flows,' KSME Int. J., Vol. 15, No. 12, pp. 1801-1807
  18. Raffel, M., Willert, C. E. and Kompenhans, J., 1998, Particle Image Velocimetry, Springer, Berlin
  19. Verhoeven, D., 1993, 'Limited-data Computed Tomography Algorithms for the Physical Sciences,' Appl. Opt., Vol. 32, No. 20, pp. 3736-3754 https://doi.org/10.1364/AO.32.003736