Examples ========= This page shows examples of params files for several applications. These params files can be used as a reference of starting point for settings up a simulations. Field experiment: DELILAH --------------------------- 2D, surfbeat, directional spreading. Aim: comparison field data hydrodynamics In order to verify the 2DH hydrodynamics of XBeach when forced by directionally-spread short waves, a simulation is set up to compare model results to field measurements. In this case the DELILAH field experiment at Duck, North Carolina is selected as a suitable test location. The period that is modeled is October 13th 1990, which was a stormy day, between 16:00 and 17:00 hours. For more info, check: http://oss.deltares.nl/web/xbeach/skillbe .. code-block:: text %%% Grid parameters %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% nx = 177 ny = 70 xori = 0. yori = 0. alfa = 0. depfile = zneumann.grd vardx = 1 xfile = x.grd yfile = y.grd posdwn = -1 thetamin = -75. thetamax = 60. dtheta = 135. dtheta_s = 15. dtheta_s = 10 %%% general %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% eps = 0.001 back = 2 leftwave = 1 rightwave = 1 %%% Time%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% tstart = 200. tintg = 1 tintm = 400. tintp = 1. tstop = 3800. taper = 200. %%% Boundary condition options%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% zs0file = tide.txt tideloc = 1 instat = 6 zs0 = 0.685 bcfile = vardens.txt %%% Sediment transport calculation options %%%%%%%%%%%%%%%%%%%%%%%%%%%%% D50 = 0.0002 D90 = 0.0003 rhos = 2650 %%% Morphological calculation options %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% morfac = 0 morstart = 3800 por = 0.4 %%% Ouput %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Output options nglobalvar = 4 zs H ve hh npointvar = 1 zs npoints = 9 580 400 655 400 705 400 725 410 745 410 760 410 780 410 805 410 825 410 Holland Coast --------------------------- This test simulates dune erosion of a profile at the holland coast during storm 1976. .. code-block:: text %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%% XBeach parameter settings input file %%% %%% %%% %%% date: 30-Jul-2021 08:52:18 %%% %%% function: xb_write_params %%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%% Bed composition parameters %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% D50 = 0.000245 D90 = 0.000367 %%% Flow boundary condition parameters %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% left = wall right = wall %%% Flow parameters %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%% General %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% bedfriccoef = 0.020000 wavemodel = surfbeat wbcEvarreduce = 0.300000 wbctype = jonstable %%% Grid parameters %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% depfile = bed.dep posdwn = 0 nx = 1564 ny = 0 alfa = 0 vardx = 1 xfile = x.grd xori = 0 yori = 0 thetamin = -90 thetamax = 90 dtheta = 180 %%% Model time %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% tstop = 151200 %%% Morphology parameters %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% morfac = 1 morstart = 0 %%% Physical processes %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% sedtrans = 1 morphology = 1 %%% Roller parameters %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%% Sediment transport parameters %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%% Tide boundary conditions %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% zs0file = tide.txt tideloc = 2 %%% Wave breaking parameters %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%% Wave-spectrum boundary condition parameters %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% bcfile = jonswap.txt random = 0 %%% Output variables %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% outputformat = netcdf tintm = 3600 tintp = 0.100000 tintg = 1200 tstart = 0 nglobalvar = 4 H hh zs zb nmeanvar = 4 H hh zs zb npointvar = 4 H hh zs zb