naa a22 4500 510765815 CHVBK 20180411083156.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1007/s11630-013-0668-0 doi (NATIONALLICENCE)springer-10.1007/s11630-013-0668-0 Characteristics of transient vortices in the boundary layer on a rotating disk under orbital motion [Elektronische Daten] [Mizue Munekata, Naoya Jobi, Keiichiro Kubo, Hiroyuki Yoshikawa] The objective of this study is to experimentally examine the characteristics of transient vortices in the boundary layer on a disk undergoing both rotation and orbital motion. The velocity fluctuations on a rotating, orbiting disk (disk radius equal to orbital radius) are measured by the hot-wire method, and the effects of orbital motion on the transient vortices in the boundary layer are examined. When the ratio of the orbital speed to the speed of rotation is ±0.025, the interval of transient vortices depends on only the orbital radius, regardless of the directions of rotation and orbital motion. The rate of low-frequency disturbances increases as the orbital speed increases, and the vortices induced by these low-frequency disturbances travel over the disk and then develop in the region of increased velocity. Consequently, no vortices generated on a rotating disk under orbital motion are stationary relative to the disk. Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag Berlin Heidelberg, 2013 Boundary layer transition nationallicence Transient vortex nationallicence Rotating disk nationallicence Velocity measurement nationallicence Hot-wire anemometer nationallicence Munekata Mizue Department of Mechanical System Engineering, Kumamoto University, 2-39-1 Kurokami, Chuo -ku, 860-8555, Kumamoto, Japan aut Jobi Naoya Department of Mechanical System Engineering, Kumamoto University, 2-39-1 Kurokami, Chuo -ku, 860-8555, Kumamoto, Japan aut Kubo Keiichiro Department of Mechanical System Engineering, Kumamoto University, 2-39-1 Kurokami, Chuo -ku, 860-8555, Kumamoto, Japan aut Yoshikawa Hiroyuki Department of Mechanical System Engineering, Kumamoto University, 2-39-1 Kurokami, Chuo -ku, 860-8555, Kumamoto, Japan aut Journal of Thermal Science Springer Berlin Heidelberg 22/6(2013-12-01), 600-605 1003-2169 22:6<600 2013 22 11630 https://doi.org/10.1007/s11630-013-0668-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11630-013-0668-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Munekata Mizue Department of Mechanical System Engineering, Kumamoto University, 2-39-1 Kurokami, Chuo -ku, 860-8555, Kumamoto, Japan aut NATIONALLICENCE 700 1- Jobi Naoya Department of Mechanical System Engineering, Kumamoto University, 2-39-1 Kurokami, Chuo -ku, 860-8555, Kumamoto, Japan aut NATIONALLICENCE 700 1- Kubo Keiichiro Department of Mechanical System Engineering, Kumamoto University, 2-39-1 Kurokami, Chuo -ku, 860-8555, Kumamoto, Japan aut NATIONALLICENCE 700 1- Yoshikawa Hiroyuki Department of Mechanical System Engineering, Kumamoto University, 2-39-1 Kurokami, Chuo -ku, 860-8555, Kumamoto, Japan aut NATIONALLICENCE 773 0- Journal of Thermal Science Springer Berlin Heidelberg 22/6(2013-12-01), 600-605 1003-2169 22:6<600 2013 22 11630 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer