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Bounded Jet Flow Issuing from a Square Nozzle 正方形ノズルから流出する拘束噴流 NOZAKI, Tsutomu 野﨑, 勉 open access From the experiments of the bounded jet flow issuing from a square nozzle, it was found that the flow relatively near the nozzle exit is fairly complex according to development of the secondary flow induced by deformation and stretching of the closed vortex tube. In the region far from the nozzle exit, however, the secondary flow almost disappears. From a point of view of the extent of the secondary flow, the flow consists of three regions as was suggested by Holdeman and Foss. These are a near, middle and far field regions in which the secondary motion is initiated, developed and decayed, respectively. These regions are also observed from the isotach patterns of the bounded jet issuing from a square nozzle. In the far regions, the approximate calculations of the velocity, momentum and kinetic energy distributions based on some simple assumptions agree well with the experiments. 鹿児島大学 Kagoshima University 1981-09 eng departmental bulletin paper VoR http://hdl.handle.net/10232/12486 https://ir.kagoshima-u.ac.jp/records/10699 0451212X AN00040363 鹿児島大学工学部研究報告 The research reports of the Faculty of Engineering, Kagoshima University 23 77 84 https://ir.kagoshima-u.ac.jp/record/10699/files/AN00040363_v23_p77-84.pdf application/pdf 716.0 kB 2016-10-31 1981-09