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
%%% 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.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% 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