Experimental Flow Field Measurement of Breaking-Wave Impact on a Vertical Wall
Date Issued
2005
Date
2005
Author(s)
Hu, Wei-Chun
DOI
zh-TW
Abstract
Breaking-wave flow field and the flow field in the vicinity of breaking wave impact on a vertical wall are investigated in this research. Also, it’s anticipated that the knowledge of the mechanism of breaking wave impact on coastal structures can be improved through the flow visualization of impact process. Breaking waves are generated by a linearly-varying frequency wave train. Particle image velocimetry is used to measure the instant flow field of breaking-wave impacts. The comparisons of waveforms with and without a vertical wall will be made to see the differences of the wave crest angles. The each sectional speed is distributed and carried on the discussion. The result shows that when produce spilling breaking waves, the speed profile of above 1/3 wave height area has a linear increasing upward speed. When spilling breaking waves impact on a vertical wall, the speed profile indicates that the horizontal speed decreases and the upward vertical speed increases, and presents the linear trend along the direction of depth of water.
Subjects
流場
碎波
直立壁
flow field
breaking-wave
vertical wall
Type
thesis
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