Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=54088#.VO1zISzQrzE Author(s) Mizue Munekata , Keiichiro Kubo , Hiroyuki Yoshikawa Affiliation(s) Department of Mechanical Systems Engineering, Kumamoto University, Kumamoto, Japan . ABSTRACT The objective of this study is to experimentally visualize traveling vortices in the boundary layer on a rotating disk under orbital motion. The orbital radius is half of the disk’s diameter (200 mm) and the maximum speed of orbital motion is 500 revolutions per minute. The Reynolds number in the pure-rotation case is 2.77 × 105. The characteristics of two types of traveling vortices are visualized by a smoke-wire method. The first type is transition vortices. In the pure-rotation case, they arise at circumferentially equal intervals, and are not traveling but stationary relative to the rotational disk. The result of visualization of this type shows that t...
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