Waves Tab

Bed shear stress associated with waves is an important parameter that contributes to sediment resuspension and transport process in coastal shallow areas and along shorelines. EFDC_Explorer has two options for incorporating waves in the flow model. These are internal wave model and external wave model as shown in Waves Tab#Figure 1.

The internal wave model internally computes the wind-induced waves using wind data provided in the WSER.INP file. In contrast, the external wave model requires the output results from SWAN, Ref/Rif, STWAVE and other wave models. EE will then generate the WAVE.INP and WAVETIME.INP files from output results to couple with EFDC model.

For all wave models, the user has the option of simulating radiation shear stress with the Include Radiation Stress check box as shown in Waves Tab#Figure 1. Checking or unchecking this option will change the wave parameters required in the right hand frame.  Including radiation separation shear stress makes the model more stable as the energy wave component can propagate outside the model.

All edges of an efdc model like a wall but if use this then goes through the wall like it is not there – makes more stable as an energy wave can propagate outside the model –

If specified then acts like a wall – so waves just reflects –

Figure 1. Waves Tab: Internal/External Linkage to SWAN Wave Model