Deterministic wave model for short-crested ocean waves: Part II. Comparison with laboratory and field measurements

Abstract

The directional hybrid wave model (DHWM) is applied to one set of laboratory wave measurements and two sets of ocean wave measurements for the deterministic prediction of wave properties in the vicinity of measurements. The DHWM first decomposes a measured wave field into its free-wave components and then predicts the wave properties based on the decomposed free-wave components. The comparisons between the predicted signals and the corresponding laboratory measurements show excellent agreement. The discrepancies between the predicted signals and the corresponding field measurements increase in comparison with those between the predicted and laboratory-measured signals. However, the agreement between the predicted and the field-measured signals remain satisfactory. These examples indicate that the DHWM is capable of predicting wave properties of a short-crested ocean wave field in a deterministic manner. Hence, it provides a robust method for ocean wave measurements and their data analysis. It is expected that the DHWM will have many applications to ocean science and engineering in the near future.