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Delta-wing vortex visualization using micro-sized water droplets generated by an ultrasonic humidifier

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Abstract

An off-surface visualization method using micro water droplets and a laser beam sheet was developed. The average size of the water droplets generated by the home-style ultrasonic humidifier was about 5–10 μ. This method was pollution-free, eliminated the problem of toxicity, and provided a sufficient density of tracing particles for good visibility. The method was successfully applied to a visualization of the complex vortex flow of a double-delta wing with strake.

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Correspondence to Sohn M. H..

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Myong Hwan Sohn: He received his B.S. degree in aerospace engineering from the Korea Air Force Academy in 1977, and his M.S. and PhD degrees from Seoul National University and Georgia Institute of Technology in 1980 and 1986, respectively. He is currently a professor in the Department of Aerospace Engineering at the Korea Air Force Academy. His research interests include unsteady aerodynamics, bio-fluid mechanics, and flow control.

Ki Young Lee: He received his B.S. degree in Mechanical Engineering from the Korea Air Force Academy in 1981, and his M.S. and PhD degrees from Seoul National University and University of Utah in 1985 and 1994, respectively. He is currently a professor in the Department of Mechanical Engineering at the Korea Air Force Academy. His research interests include flow control, experimental fluid mechanics and jet propulsion engine.

Jo Won Chang: He received his B.S. degree in aerospace engineering from the Korea Air Force Academy in 1982, and his M.S. and Ph.D. degrees from Seoul National University and KAIST in 1986 and 1999, respectively. He is currently an associate professor in the Department of Aeronautical Science and Flight Operation at Korea Aerospace University in Korea. His research interests include unsteady aerodynamics, bio-fluid mechanics, wind tunnel experiments, and flight tests.

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Sohn, M.H., Lee, K.Y. & Chang, J.W. Delta-wing vortex visualization using micro-sized water droplets generated by an ultrasonic humidifier. J Vis 11, 337–346 (2008). https://doi.org/10.1007/BF03182202

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  • DOI: https://doi.org/10.1007/BF03182202

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