Keywords
random wave
periodic wave
velocity
periodic wave
velocity
How to Cite
Lee, A., Greated, C. A., & Durrani, T. S. (1974). VELOCITIES UNDER PERIODIC AND RANDOM WAVES. Coastal Engineering Proceedings, 1(14), 31. https://doi.org/10.9753/icce.v14.31
Abstract
Using the linear approximation for predicting velocities under periodic water waves, relationships are established between the velocity spectrum and the surface elevation spectrum for three-dimensional waves. The two dimensional forms of these relationships are used for comparison with velocity and elevation spectra measured in a laboratory wave tank. The predicted distortion of the spectrum shape can be observed in the experimental results. Velocity measurements were recorded using a laser velocimeter employing a rotating diffraction grating for shifting the optical frequencies. This allows measurement without sign ambiguity. The random waves were generated using a servodriven paddle with a filtered white noise input.
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