SBEACH
Two additional models are presently being integrated into the system:
for simulating storm-induced beach change and GENESIS for simulating shoreline
Each model in the system is described in the following sections.
change.
Model WIFM is a two-dimensional, time-dependent, long-wave model for
solving the vertically integrated Navier-Stokes equations in a stretched
Cartesian coordinate system.
The`model simulates shallow-water, long-wave
hydrodynamics such as tidal circulation, storm surges, and tsunami
p r o p a g a t i o n . WIFM contains many useful features for studying these phenomena
such as moving boundaries 'to simulate flooding/drying of low-lying areas and
subgrid flow boundaries to simulate small barrier islands, jetties, dunes, or
other structural features.
Model output includes vertically integrated water
velocities and water surface elevations.
Model SPH is a two-dimensional, parametric model.developed in a stretched
Cartesian coordinate system for representing wind and atmospheric pressure
fields generated by hurricanes.
It is based on the Standard Project Hurricane
criteria developed by .the National Oceanic and Atmospheric Administration
(NOAA, and the model's primary outputs are resulting wind velocity and
The
atmospheric pressure fields which can be used in storm surge modeling.
SPH model can be run independently, or it can be invoked from within model
WIFM.
Model RCPWAVE is a two-dimensional, steady-state, short wave model for
solving wave propagation problems over arbitrary bathymetry.
The governing
equations solved in the model are the "mild slope" equation for linear,
monochromatic waves, and the equation specifying irrotationality of the wave
phase function gradient. These equations account for shoaling, refraction and
bottom-induced diffraction within a study area. The model also inlcudes an
algorithm for treating wave breaking.
Model output includes wave height, wave
angle and wave number.
Model CLHYD simulates shallow-water, long-wave hydrodynamics such as
CLHYD can simulate flow fields
tidal circulation and storm surge propagation.
CLHYD is
induced by wind fields, river inflows/outflows, and tidal forcing.
similar to WIFM, with the added feature of operating on a boundary-fitted
However, CLHYD cannot simulate flooding/ drying of
(curvilinear) grid system.
low-lying areas as WIFM can. Model output includes vertically integrated
water velocities and water surface elevations.
Model SHALWV is a two-dimensional, pseudo-discrete, time-dependent
spectral wave model for simulating wave growth, decay, and transformation.
Developed in a rectangular Cartesian coordinate system, the model is based on
the solution of the inhomogeneous energy balance equation via finite
difference methods. This equation accounts for several mechanisms, including
wind-wave growth; refraction, shoaling, nonlinear wave-wave interactions, high
frequency energy dissipation, surf zone breaking, and decomposition of energy
into wind-sea and swell wave components. Model output includes one-
dimensional frequency and two-dimensional frequency-directional spectra.
Model STWAVE is a computationally efficient fjnite-difference model for
nearcoast time-independent spectral wave energy propagation simulations. The
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