Abstract
4D-PTV system was constructed. The measurement system consists of three high-speed high-definition cameras (1k × 1k, 2000 fps), Nd-Yag laser (2000 Hz) 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 system.
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Tae Gyu Hwang: He received a B.A at Korea Maritime University (KMU) in 2001. He finished his M.Sc. degree at KMU in 2003. He is a Ph.D candidate of mechanical engineering at KMU since 2003. His recent research area is on the near wake of a sphere using 3D PTV and on an impinging jet flow using 4D-PTV technique. His research interests are thermal flow visualization using 3D-PIV, 3D-PTV and micro PIV techniques.
Deog Hee Doh: He received B.A. at Korea Maritime University (KMU) (1985). He finished his M.Sc. degree at the graduate school of KMU(1988). He received his Ph.D. degree at the Department of Mechanical Engineering of the University of Tokyo, Japan in 1995. His graduate works is on the development of 3D-PTV and simultaneous measurement techniques on temperature and velocity fields for thermal flows. He worked as an invited researcher for the Advanced Fluid Engineering Research Center (AFERC) in 1995. He has been working for Korea Maritime University since 1995 at the School of Mechanical and Information Engineering. His research subjects are to develop spatial measurement techniques such as 3D-PIVs, 3D-PTVs for the analysis of turbulent flows.
Koji Okamoto: He received his M.Sc.(Eng) in Nuclear Engineering in 1985 from University of Tokyo. He also received his Ph.D. in Nuclear Engineering in 1992 from University of Tokyo. He worked in Department of Nuclear Engineering, Texas A & M University as a visiting associate professor in 1994. He works in Nuclear Engineering Research Laboratory, University of Tokyo as an associate professor since 1993. His research interests are Quantitative Visualization, PIV, Holographic PIV Flow Induced Vibration and Thermal-hydraulics in Nuclear Power Plant.
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Hwang, T.G., Doh, D.H. & Okamoto, K. 4D-PTV Measurements of an impinged jet with a dynamic 3D-PTV. J Vis 8, 245–252 (2005). https://doi.org/10.1007/BF03181502
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DOI: https://doi.org/10.1007/BF03181502