GenCade Wave Input

Section 3.7 of the GenCade User's Guide discusses wave data; however, this section will give more details about setup and conceptual model and GenCade model sign conventions.

Sign Conventions

The sign conventions of the conceptual model and GenCade model are different. When a user creates a grid in the conceptual model, the Grid Frame Properties window will list Angle under Origin and Orientation. In the conceptual model, the sign convention is in degrees counterclockwise from the x axis. This is the angle listed under Grid Frame Properties. However, this is not the angle that will be used to set up the wave direction for the wave information.

Once the conceptual model is converted to 1D grid, cell numbers will be used instead of real world coordinates. In the GenCade model, the sign convention is also different. The sign convention is in degrees clockwise from north. Wave data must be relative to the orientation of the GenCade model grid and not the conceptual model grid. While working in the GenCade model, go to GenCade in the top menu and click on Edit Grid. The Origin X, Origin Y, Number of cells, and Cell size will be the same as specified in the conceptual model. The Azimuth is different that the Angle specified in the conceptual model. The wave directions must be relative to this Azimuth.

The following section will list steps to correctly define wave direction for GenCade.