SHOREFACE CASE

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Shore Face Planar Beach Test Case

This test establishes a simple case of spectral waves obliquely approaching a plane beach and is described in detail in:

Haas and Warner (2009). Comparing a quasi-3D to a full 3D nearshore circulation model: SHORECIRC and ROMS, Ocean Modelling, 26, 91-103.

The case consists of spectral waves approaching a mild sloping (1/80) plane beach with an oblique angle of incidence. The wave forcing is obtained by first running SWAN separately by specifying a JONSWAP spectrum for 2 m offshore wave height with a peak period of 10 s at an angle of 10 degrees for the incoming wave field. SWAN was configured to use 90 directional bins and 30 frequency bins between 0.04 and 0.5 Hz. Additional parameters are listed in the table below.

The circulation model computes the radiation stress forcing based on the SWAN wave output. For this application there is not a feedback of the currents to the wave model. Also we neglect the contribution from the roller model. The circulation model uses a quadratic bottom stress formulation using the depth average currents.

Results are shown after the model reaches steady state.