Abstract
A novel method of flow visualization by dye was used in conjunction with numerical solutions to investigate the formation stages of large stationary vortical motions located in the “trajectory bend” centers of impinging jet flows. The vortices dominate the flowfield and were found to have profound influence on the wall transport phenomena. Depending on the value of Reynolds number, four regimes were identified with different flow character.
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Václav Tesař: He received his Ing. degree in Mechanical Engineering in 1963 from ČVUT — Czech Technical University, Praha, Czech Republic. From 1963 to 1999 he was employed at ČVUT Praha as Assistant, later Docent and finally Full Professor. He recived C.Sc. degree (an equivalent of PhD) from ČVUT Praha in 1972. In 1985, he became Visiting Professor at Keio University, Yokohama, Japan. In 1992 he became Visiting Professor at Northern Illinois University, DeKalb, USA. From 1994 to 1998, he was Head of the Department of Fluid Mechanics and Thermodynamics, ČVUT Praha. He is currently Visiting Professor at the Department of Chemical and Process Engineering, The University of Sheffield, United Kingdom. His research interests are in shear flows, in particular jets and wall jets and their applications to fluidic no-moving-part flow control (named as inventor on 195 Czech Patents, mainly on fluidic devices, and on four British Patent Applications on microfluidic devices).
Jonathan Barker: He received his MSc degree in Chemical and Process Engineering in 2000 from The University of Sheffield, where during his final year he collaborated with Professor Tesař on investigations of impinging jet flows. He currently teaches English in Ika-gun, Shiga, Japan.
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Tesař, V., Barker, J. Dominant vortices in impinging jet flows. J Vis 5, 121–128 (2002). https://doi.org/10.1007/BF03182420
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DOI: https://doi.org/10.1007/BF03182420