Irregular wave normal incidence

Figure: (left) snapshot of surface elevation, (middle) vorticity field, (right) mean current field

The following sections wil be modified in “input.txt” for this example. The domain setup was defined in Basics for model setup.

Set a descriptive title for your simulation:

!-----TITLE-----
 TITLE = rip_2D

Add an irregular wavemaker in a water depth of 13.0 m located 425.0 m from the left boundary with the following characteristics:

!-----WAVEMAKER-----
 WAVEMAKER = WK_IRR
 DEP_WK = 13.0
 Xc_WK = 425.0
 Yc_WK = 0.0
 FreqPeak = 0.1
 FreqMin = 0.03
 FreqMax = 0.5
 Hmo = 1.0
 GammaTMA = 5.0
 ThetaPeak = 0.0
 Sigma_Theta = 10.0

(refer to Wave-maker specification for parameter definitions)

Set the periodic boundary condition to TRUE:

!-----PERIODIC BOUNDARY CONDITION-----
 PERIODIC = T

Set the sponge layer width to 60 m:

!-----SPONGE LAYER-----
 DIFFUSION_SPONGE = F
 FRICTION_SPONGE = T
 DIRECT_SPONGE = T
 Csp = 0.0
 CDsponge = 1.0
 Sponge_west_width =  0.0
 Sponge_east_width =  60.0
 Sponge_south_width = 0.0
 Sponge_north_width = 0.0

(refer to Sponge Layers for parameter definitions)

Set the friction coefficient to 0.002:

!-----PHYSICS-----
 Cd = 0.002

Keep the default values for the NUMERICS.

Set the minimum depth for wetting and drying to 0.01:

!-----WET-DRY-----
 MinDepth = 0.01

Set the viscosity breaking scheme to FALSE:

!-----BREAKING-----
 VISCOSITY_BREAKING = F

(refer to Example: Breaking for parameter definitions)

Set the wave average parameters to the following:

!-----WAVE AVERAGE-----
 T_INTV_mean = 50.0
 STEADY_TIME= 100.0

Set the following output parameters to TRUE:

!-----OUTPUT-----
 ETA = T
 U = T
 V = T
 Umean = T
 Vmean = T
 MASK = T
 WaveHeight = T

(refer to Output for parameter definitions)