Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Simultaneous Measurement of Fluid Velocity and Particle Velocity in a Particle-Containing Fluid Flow

입자가 포함된 유동장에서 유체속도와 입자속도의 동시 측정기법

  • Jin Dong-Xu (Thermal/Flow Control Research Center, Korea Institute of Science & Technology(KIST)) ;
  • Lee Dae-Young (Thermal/Flow Control Research Center, Korea Institute of Science & Technology(KIST)) ;
  • Lee Yoon-Pyo (Thermal/Flow Control Research Center, Korea Institute of Science & Technology(KIST))
  • 김동욱 (한국과학기술연구원 열유동제어연구센터) ;
  • 이대영 (한국과학기술연구원 열유동제어연구센터) ;
  • 이윤표 (한국과학기술연구원 열유동제어연구센터)
  • Published : 2005.04.01
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Abstract

A novel method for simultaneously measuring the fluid velocity and the large particle velocity in a particle-containing fluid flow is developed in this study. In this method, the fluid velocity and the large particle velocity are measured by PIV and PTV, respectively. The PIV and PTV images are obtained from the same flow images. Since a PIV result represents the average displacement of all particles in an interrogation area, it will include an error caused by the relative displacement between the large particles and the fluid. In order to reduce the false influence of large particles on the PIV calculation, the mean brightness of small PIV particle images is substituted to the locations of large particles in the PIV images. The simulation results showed that the new method significantly reduces the PIV error caused by the large particles even at the case where the large particles occupy area fraction as large as $20\%$ of the full image.

Keywords

References

  1. Wereley, S. T., Akonur, A. and Lueptow, R. M., 2002, Particle-fluid velocities and fouling in rotating filtration of a suspension, Journal of Membrane Science, Vol. 209, pp. 469-484 https://doi.org/10.1016/S0376-7388(02)00365-4
  2. Choi, H. M, Kurihara, T., Monji, H. and Matsui, G., 2002, Measurement of particle/ bubble motion and turbulence around it by hybrid PIV, Flow Measurement and Instrumentation, Vol. 12, pp. 421-428 https://doi.org/10.1016/S0955-5986(01)00030-9
  3. Gonzalez, R. C. and Woods, R. E., 2002, Digital Image Processing, 2nd ed., Prentice- Hall, New Jersey
  4. Ohmi, K. and Li, H. Y., 2000, Particle-tracking velocimetry with new algorithms, Measurement Science and Technology, Vol. 11, pp.603-616 https://doi.org/10.1088/0957-0233/11/6/303
  5. Westerweel, J., 1997, Fundamentals of digital particle image velocimetry, Measurement Science and Technology, Vol. 8, pp. 1379-1392 https://doi.org/10.1088/0957-0233/8/12/002
  6. Okamoto, K., Nishio, S., Saga, T. and Kobayashi, T., 2000, Standard images for particle-image velocirnetry, Measurement Science and Technology, Vol. 11, pp.685-691 https://doi.org/10.1088/0957-0233/11/6/311