2023 Volume 79 Issue 18 Article ID: 23-18162
To estimate design waves of harbor facilities for a quasi-deepwater wave, the inverse estimation which may require some repeated calculations of wave transformation to infer a design deepwater wave should be conducted. To reduce the repeated times of calculations, to set a required calculation domain, and to predict an appropriate directional spreading parameter of design deepwater wave before performing the calculations, we have proposed a simple inverse estimation method for a deepwater wave by using several diagrams with a quasi-deepwater wave. However, its applicability has been not enough for estimating the deepwater wave with wave diffraction on a real coastal topography.
In this study, we modify the procedure of inverse estimation on dealing wave diffraction with the expanded diagrams of both wave refraction coefficients and angles and wave diffraction coefficient and angles, and make it possible to estimate the deepwater wave without repeated calculations. Moreover, it is confirmed that an approximate values of deepwater wave property can be estimated by using the modified method and they realize to reduce the times of repeated calculations of wave transformation on both a model and a real coastal topography.
