TY - GEN
T1 - Characteristics of vortex shedding process induced by a solitary wave propagating over a submerged obstacle
AU - Lin, Chang
AU - Ho, Tsung Chun
AU - Hsieh, Shih Chun
AU - Chang, Kuang An
PY - 2006
Y1 - 2006
N2 - The generation and evolution of shedding vortices induced by a solitary wave propagating over a two-dimensional submerged obstacle, a rectangular dike or a vertical plate, was investigated experimentally. The vortex shedding process was observed qualitatively using laser induced fluorescence (LIF) technique and particle tracing technique. The velocity fields were measured quantitatively using particle image velocimetry (PIV). Base on the results of the flow visualization, the comparison of the vortex shedding processes between rectangular dike and vertical plate was qualitatively made under the same wave condition. It is noted that the process of either rectangular model or vertical plate can be divided into four common phases, but the characteristics of shedding vortices are different in the same phase. In addition, the velocity similarity profiles for the formation of separated shear layer and the formation of vertical jet were also quantitatively compared between rectangular dike and vertical plate.
AB - The generation and evolution of shedding vortices induced by a solitary wave propagating over a two-dimensional submerged obstacle, a rectangular dike or a vertical plate, was investigated experimentally. The vortex shedding process was observed qualitatively using laser induced fluorescence (LIF) technique and particle tracing technique. The velocity fields were measured quantitatively using particle image velocimetry (PIV). Base on the results of the flow visualization, the comparison of the vortex shedding processes between rectangular dike and vertical plate was qualitatively made under the same wave condition. It is noted that the process of either rectangular model or vertical plate can be divided into four common phases, but the characteristics of shedding vortices are different in the same phase. In addition, the velocity similarity profiles for the formation of separated shear layer and the formation of vertical jet were also quantitatively compared between rectangular dike and vertical plate.
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U2 - 10.1115/OMAE2006-92457
DO - 10.1115/OMAE2006-92457
M3 - Conference contribution
AN - SCOPUS:33751312642
SN - 0791837777
SN - 9780791837771
T3 - Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
BT - Proceedings of 25TH International Conference on Offshore Mechanics and Arctic Engineering, OMAE 2006
T2 - 25TH International Conference on Offshore Mechanics and Arctic Engineering, OMAE 2006
Y2 - 4 June 2006 through 9 June 2006
ER -