D-R-A-F-T
Using SED2D
Assumed User Knowledge Base
SED2D WES can be used by engineers and scientists to solve sediment transport
problems that are satisfactorily described as unsteady, suspended transport in two
horizontal dimensions with bed interaction. Users are cautioned that the program is
relatively easy to use but somewhat more difficult to use properly. Persons using the
program are assumed to be familiar with using a computer system. Knowledge of
basic concepts in numerical methods is necessary. It is essential that the user possess
considerable knowledge of hydraulic and sedimentation processes and that he or she
understand the computer program and its proper use. At least one person on the
modeling team should be familiar with the prototype system being modeled. In
order to supply data to the model, verify the model, and understand the model results
it is usually necessary to undertake a complimentary data collection program. The
adage "Garbage in, garbage out" applies here.
Modeling Process
As mentioned previously, SED2D WES requires that hydrodynamic data be
externally supplied, usually by a numerical hydrodynamic model. The TABS-MD
modeling system has been designed to satisfy this and other needs for a
comprehensive modeling package. TABS-MD consists of RMA2 WES, a general-
purpose program for hydrodynamic modeling, in addition to SED2D WES. The
graphical user interface, SMS, and a number of utility programs are used to develop
input, translate data, analyze output, and provide graphical output from the models.
The following flow chart illustrates the SED2D modeling process. Items with bold
borders are required; others are optional
Dynamic Memory Allocation
Effective April 2003 with version 4.54 of SED2D, the code was converted to
FORTRAN 90 dynamic memory allocation. This allows the user the ability to
control the dimensionality of the model without having to recompile.
Using SED2D 21
Users Guide To SED2D-WES
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