Development of single optical axis scanning PIV method

단일 광경로 스캔PIV기법의 개발

  • 김형범 (경상대학교 기계항공공학부) ;
  • 정인영 (경상대학교 전기전자공학부) ;
  • 이상혁 (경상대학교 기계항공공학부) ;
  • 류청환 (경상대학교 기계항공공학부) ;
  • Published : 2005.12.01


PIV(Particle image velocimetry) presents the flow velocity of whole flow fields in a fraction of a second. 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 which this configuration is hard to be fulfilled. In this study, we developed new PIV method which only uses single optical axis to grab the particle images. This new PIV method become possible by utilizing the scanning method similar to echo PIV technique. One particle image of 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.