Copyright © 2016 by the International Society of Offshore and Polar Engineers.The effect of yaw angle (a) on hydrodynamic forces of a yawed square cylinder oscillating in still water is studied experimentally. The independent principle (IP) was examined by evaluating the hydrodynamic coefficients that derived from the measured in-line and lift forces using a 3-component force link at a Keulegan-Carpenter (KC) number range of 3~30 and a Stokes parameter (ß) range of 500~1600. Significant differences are observed in normalized drag and inertia coefficients for the KC ranges of 8~20 and 10~18, respectively, indicating the invalidity of the IP. The peak on the spectra of the lift force becomes pronounced as abecomes larger, which implies that the yaw angle has an intensified effect on the vortex shedding process around a square cylinder in oscillatory flow.
|Title of host publication||Proceedings of the 12th ISOPE Pacific-Asia Offshore Mechanics Symposium|
|Publisher||International Society of Offshore and Polar Engineers|
|Number of pages||6|
|Publication status||Published - 2016|
|Event||12th ISOPE Pacific-Asia Offshore Mechanics Symposium: PACOMS 2016 - Gold Coast, Australia|
Duration: 4 Oct 2016 → 7 Oct 2016
|Conference||12th ISOPE Pacific-Asia Offshore Mechanics Symposium|
|Period||4/10/16 → 7/10/16|
Lou, X., Zhou, T., & Cheng, L. (2016). Hydrodynamic forces of a yawed square cylinder in oscillating flows. In J. S. Chung (Ed.), Proceedings of the 12th ISOPE Pacific-Asia Offshore Mechanics Symposium (pp. 95-100). International Society of Offshore and Polar Engineers.