Introduction

The WS Directional Wave Analysis module is an efficient tool for directional analysis of concurrent data of surface elevation and orthogonal velocities (or fluxes). Hence the directional wave analysis can be performed for data from

·         Physical model tests

·         Field measurements

·         Numerical simulations

The module is based on the maximum entropy method (MEM) as described by Nwogu et al. (1987).

Figure 5.1           The calculated mean wave direction on top of a bathymetry. The input data is based on a MIKE 21 BW Boussinesq Waves simulation with directional wave input

Figure 5.2           Calculated directional spectrum at the two read dots indicated on the map above

The module provides the following different spectra, functions and properties:

·         Directional spectrum or directional spreading function

·         Directional energy distribution or directional distribution (frequency inte­grated)

·         Surface elevation spectrum (directional integrated)

·         Mean wave direction function and spreading function

·         Spectral values

·         Mean wave direction and directional spreading