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Proceedings Paper

Path transition of freely falling thin disks
Author(s): H.-J. Zhong; C.-B. Lee
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Paper Abstract

The free falling motions of thin circular disks in still water were investigated experimentally. All six degrees of freedom of a falling disk were determined by a stereoscopic vision method. For the disk of small dimensionless moment of inertia (I* < 6.0 × 10-3), three types of motions were identified, including a planar zigzag one and two newly discoveried motions. The two new motion both have non-planar trajectory and continous rotation about the disk's symmetry axis. Flow visualizations were also carried out to show the wake structures with different types of motions.

Paper Details

Date Published: 14 April 2010
PDF: 7 pages
Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 752212 (14 April 2010); doi: 10.1117/12.854746
Show Author Affiliations
H.-J. Zhong, Peking Univ. (China)
C.-B. Lee, Peking Univ. (China)

Published in SPIE Proceedings Vol. 7522:
Fourth International Conference on Experimental Mechanics
Chenggen Quan; Kemao Qian; Anand Krishna Asundi; Fook Siong Chau, Editor(s)

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