Abstract

The digital HPTV(holographic particle tracking velocimetry) velocity field measurement system consists of four steps: recording, numerical reconstruction, particle extraction and velocity extraction. In the velocity extraction process, we improved the two frame PTV algorithm to extract 3-D displacement information of each particle located in 3D space. Because a digital CCD camera was used, some factors such as spatial resolution, numerical aperture, and particle concentration influenced on the performance of the developed digital HPTV. Especially, the particle concentration $(C_o)$ affected the reconstruction efficiency and recovery ratio in the numerical reconstruction and particle extraction procedure. In this paper, the effect of particle concentration reconstruction efficiency and recovery ratio were analyzed experimentally. Optimal particle concentration was found to be in the range of $C_o=11{\sim}17\;particles/mm^3$.

주제어

#디지털 홀로그래픽 입자추적유속계   #수치적 재생   #재생률   #입자 농도  

저자의 다른 논문

참고문헌 (9)

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이 논문을 인용한 문헌 (4)

1. Yang, Yan ; Kang, Bo-Seon 2008. "A Study on Determination of the Focal Plane of Particle in Digital Particle Holography" 大韓機械學會論文集. Transactions of the Korean Society of Mechanical Engineers. B. B, 32(5): 374~381  원문보기 상세보기
2. Yan, Yang ; Kang, Bo-Seon 2010. "Digital Particle Holographic System for Flow-Field Measurements" 大韓機械學會論文集. Transactions of the Korean Society of Mechanical Engineers. B. B, 34(3): 309~316  원문보기 상세보기
3. Yan, Yang ; Kang, Bo-Seon 2010. "Development of Digital Particle Holographic System for Measurements of the Characteristics of Spray Droplets" 한국액체미립화학회지 = Journal of ilass-korea, 15(2): 53~60  원문보기 상세보기
4. Roh, H.S. ; Kang, B.S. 2013. "Validation of Digital Holographic Particle Velocity Measurement System" 한국액체미립화학회지 = Journal of ilass-korea, 18(3): 119~125  원문보기 상세보기