대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제31권2호
  • /
  • Pages.181-187
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  • 2007
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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단일 광경로 스캐닝 PIV기법 개발

Development of the Scanning PIV Method with Single Optical Axis

  • 김형범 (경상대학교 기계항공공학부)
  • 발행 : 2007.02.01
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⟨ 이전 논문 다음 논문 ⟩

초록

Conventional PIV method uses two optical axis configuration during the image grabbing process. That is, the illumination plane and the recording plane must be parallel. This configuration is very natural to grab the whole field without the image distortion. In the real problem, it is often to meet the situation when this configuration is hard to be fulfilled. In the present study, the new PIV method which uses only single optical axis to grab the particle images is developed. This new PIV method becomes possible by utilizing the scanning method similar to the echo PIV technique. One particle image of the scanning PIV consists of scanned several line images and by repeating this scanning process, two particle images were grabbed and processed to produce the velocity vectors. An optimization study was performed to find parameters which minimize the measurement errors. The effects of particle diameter, beam overlap ratio and particle number density were investigated.

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참고문헌

  1. Adrian, R. J., 1991, 'Particle-imaging Techniques for Experimental Fluid Mechanics,' Annu. Rev. Fluid Mech., Vol. 23, pp. 261-304 https://doi.org/10.1146/annurev.fl.23.010191.001401
  2. Anderson, S., Khalitov, D. and Longmire, E., 1999, 'High Spatial Resolution, Stereoscopic PIV Measurements in Fully Developed Turbulent Channel Flow,' PIV3rd, pp. 95-100, Santa Barbara, USA
  3. Meng, H. and Hussain, F., 1995, 'In-line Recording and Off-axis Viewing Technique for Holographic Particle Velocimetry,' Applied Optics, Vol. 34, pp. 1827-1840 https://doi.org/10.1364/AO.34.001827
  4. Kim, H. B., 2004, 'Development of Echo PIV Using Ultrasound Contrast Agent,' Trans. of the KSME(B), Vol. 28, No. 12, pp. 1528-1534 https://doi.org/10.3795/KSME-B.2004.28.12.1528
  5. Kim, H. B., Hertzberg, J. R., Lanning, C. and Shandas, R., 2004, 'Non-invasive Measurement of Steady and Pulsating Velocity Profiles and Wall Shear Stress in Arteries Using Echo PIV: In Vitro Validation Studies,' Ann. Biomed. Eng., Vol. 32, pp. 1067-1076 https://doi.org/10.1114/B:ABME.0000036643.45452.6d
  6. Westerweel, J., Dabiri, D. and Gharib, M., 1997, 'The Effect of a Discrete Window Offset on the Accuracy of Cross-correlation Analysis of Digital PIV Recordings,' Exp. Fluids, Vol. 23, pp. 20-28 https://doi.org/10.1007/s003480050082
  7. Hart, D. P., 1999, 'Super-resolution PIV by Recursive Local-correlation,' J. Visualization, Vol. 10, pp. 1-10
  8. Okamoto, K., 1999, 'Checker Board Cross-correlation Technique for PIV,' Proc. of PSFVIP-2, Honolulu, No. PF116
  9. Willert, C. E. and Gharib, M., 1991, 'Digital Particle Image Velocimetry,' Exp. Fluid, Vol. 10, pp. 181-193 https://doi.org/10.1007/BF00190388