한국가시화정보학회:학술대회논문집
- 한국가시화정보학회 2004년도 Proceedings of 2004 Korea-Japan Joint Seminar on Particle Image Velocimetry
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- Pages.33-40
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- 2004
4-D PTV
- Doh Deog Hee (Flow Visualization Laboratory, Korea Maritime Univ.) ;
- OKAMOTO Koji (Nuclear Engineering Research Laboratory, The University of Tokyo)
- 발행 : 2004.12.01
초록
A 4D-PTV system was constructed. The measurement system consists of three high-speed high-definition cameras(1k x 1k, 2000fps), Nd-Yag laser(2000Hz) and a host computer. The GA-3D-PTV algorithm was used for completing the measurement system. The 4D-PTV is capable of probing the spatial distribution of velocity vectors of the flow field overcoming the temporal resolution of the characteristic turbulence length scales of the measured flow fields. A horizontal impinged jet flow (H/D=7) was measured. The Reynolds number is about 33,000. Spatial temporal evolution of the jet flow was examined and physical properties such as spatial distributions of vorticity and turbulent kinetic energy were obtained with the constructed.