USAEWES Coastal And Hydraulics Laboratory, 1997
PC and Unix
CH3D-WES is a time-varying 3-dimensional hydrodynamic and transport
model based on boundary-fitted curvilinear numerical grid. CH3D-WES numerically
solves the shallow water Navier Stokes equations on each numerical grid cell.
The basic code of CH3D-WES was first developed by Sheng (1986) for WES and
has been extensively modified by WES and the CH3D-WES version has been recoded
for more efficient computing. The boundary-fitted coordinates feature of the
model provides enhancement to fit irregular shoreline configuration and natural
or man-made deep channels that often exist in estuaries, bays and harbors.
Physical processes governing the circulation patterns and vertical
mixing that are modeled include tides, wind, density effects (salinity and
freshwater inflows, turbulence and the effect of the earth's rotation. Water
surface elevation and water velocities (u,v,w) in the water column at each
grid cell are output from the model. Turbulence module employed in CH3D-WES
simulates vertical mixing in the water column and, therefore, CH3D-WES simulates
strafication/destratification processes that often constitute important mechanisms
for biological and water quality variations.
See an example here (371K download).