Wave and Current Interactions
An experimental study of the kinematics of extreme waves on opposing uniform and depth-varying currents was conducted using the PIV technology. A modified model was proposed to predict the distributions of extreme wave kinematics and proved to be coincident well with the measured one. Under the effects of the opposing uniform and the shear currents, the lower part of horizontal profile fits well with the Doppler-shifted fifth-order solution. However, in the area near the wave surface, owing to the severe nonlinear effects, the Doppler-shifted solution underestimates the measured velocity significantly.